Why do I smell blood in the water (i.e. another 'debate' thread)

Best MBT IMO:
Strv122 with the new mine protection package - the Swede Leo2A5 has additional armor on the turret top and sides capable of defeating most if not all 125mm APFSDS rounds from current Russian MBTs and the new mine protection package gives it more protection against AT mines
Leopard 2A6 - Practically the Leopard 2A5 with the Strv122 armor package and a whopping 55-calibre L55 120mm gun, giving it enormous penetrating power currently unmatched by other tanks. Using ordinary APFSDS rounds (not the DU ones the US uses) with the new gun gives it the equivalent penetration power of the Abrams' Rheinmetall M256 gun (the same gun used on the Leopard 2) without the need of DU. So imagine if the L55 is used in conjunction with DU ammunition. Like a hot knife slicing through butter.
BTW, the Leopard 2 in general has better fording ability than the Abrams (which AFAIK doesn't have a deep fording kit unlike the Leo2)
Merkava IV - can be argued as the most protective tank, it was designed with MOUT in mind. The top armor is said to be proof against newer RPG rounds and maybe even Sagger ATGMs fired from above. The Merkava series is said to have a most excellent suspension system giving the tank great riding ability over rough terrain at high speeds. The Merkava IV is even better, with reports saying that the tank can go at its top speed over the rough terrain of the Golan with the crew inside having a comfortable ride.
T-80 Black Eagle - Ok, more of a technology demonstrator than a mass-produced MBT, it still nonetheless has the most advanced active defense system of any tank. The ERA is supposed to be the new Kaktus which gives it protection against the latest 120mm rounds of the US. The active defense system is the Arena-1 which gives the tank almost 360-degrees protection from ATGMs and tank ammunition. A millimetric wave radar detects the incoming round or ATGM and the computer fires off a cartridge or two similar in principle to a claymore mine which detonates a few feet off the tank, creating a cloud of fragments which destroys the ATGM. Video showing this is most impressive. Other than the Arena-1, there's the Shtora jammers which warns the tank that it is being lased and the turret is automatically slewed to point towards the source of the laser emitter, thus giving the crew a parting shot at the enemy.
Thunderbolt - No, not MY Thunderbolt model, but the real one. Ok, like the Black Eagle, the US Thunderbolt is basically a tech-demonstrator and is essentially the XM-8 AGS but this time it has a new 120mm high-velocity, low-recoil gun that is strong enough to destroy most tanks out there. The advantage of the Thunderbolt is that it is small, light, and can be transported theoretically by C-17 and even the C-130. However its small size and large gun means little ammunition - less than 20 rounds IIRC.
Challenger 2 - Big tank, big gun, hi-tech. However, unlike its peers, it is relatively slow (up to 25mph - or was that kph? - only compared to the 35 of the Abrams and the Leo). Its 120mm gun is of the rifled variety, not smoothbore, thus less muzzle velocity theoretically and not compatible with US ammunition. However, it is British and because it is so, I love it hehehe
IFVs:
CV90 series - a most versatile design, the Swedish CV90 is a true IFV. For one, it can carry a full squad unlike the US Bradley. Second, the design is so versatile, a variety of weapons can be placed, from a turret with 40mm gun (CV9040) to the CV90 SPAAG to a light tank the CV90120. Note that an IFV stands for
Infantry
Fighting
Vehicle, its main purpose is to deliver troops in a hostile environment, not act as a tank. An IFV should - must - be capable of carrying a full squad, not just half or three-quarters. The CV90 performs this role well.
Achzarit - okay, the 'Cruel Girl' isn't really an IFV but rather an APC, but it is one of only two heavy APCs with tank levels of protection (the other being the converted Chieftain or Centurion Jordanian APC which starts with the letter 'T'). The exit of the Achzarit though is hideous - much worse I think than the BMP series - but it can carry a full squad or two. Now, if the IDF can only put a remote-controlled turret armed with twin .50-calibres or twin MG3s or even a flame thrower on the Cruel Girl, and it'll be perfect hehehehe
As for tag-teams, I'll have the Strv122/Leo2A6 with the CV9040. A full infantry squad so that one or two members carries a Javelin ATGM, the rest of the troops will handle the crunchies (enemy troops), the 40mm to plink other APCs and IFVs such as the BMP (with its atrocious exits), while the Strv122/Leo2A6 provides unrivaled firepower on the battlefield.
If quick reaction is needed, I'll take the Thunderbolt (if it's deployed) and the Wiesel. Small vehicles, the Thunderbolt and Wiesel can be airlifted and transported to the battlefield and conduct hit-and-run attacks or ambushes on the enemy.
If my mission is MOUT, then I'll take the Merkava IV (add a battering ram at the hull - yes, the IDF has that) and the Achzarit. I want full tank protection for my troops before they dismount into a friendly building, while the Merkava IV will be nearly impervious to whatever the enemy can throw at me.