Well not really an answer that you are looking for since you are thinking of switching to other brands but for me Tamiya is still lonely at the top when it comes to airbrushable paint.
It mixes perfectly with their own thinner. add a few drops of X22 clear and you get a really smooth and even coat of paint. It cleans easily. And the lack of colors can be catched up by mixing your own color. I have never in my life sprayed a Tamiya color directly out of the bottle. It was Always a mix. Bought a bunch of small glass jars with a plastic screw on lid specially for that purpose. That way I have them premixed with thinner as well... suck up with eye dropper put in cup and

I will probably be a minority here when it comes to Vallejo since I think the stuff is utter Rubbish. Aside from the problems I had with thinning it and constantly clogging up my AB's. Even the model air isn't as fantastic as they say. I also don't like the fragility of the paintcoat.

With Tamiya I never had those problems... Literally never

Tamiya all the way because it:

1. sprays extremely well.
2. can be extremely thinned.
3. grabs the plastic
4. is highly durable when cured unlike Vallejo-family acrylics.
5. can be easily cleaned with Windex or IPA even when it's cured.

Tamiya's limited color choice is not a problem for me because with a free app like imodelkit, I can easily reproduce almost any color.

Gunze Sangyo Aqueous Hobby Colour is very similar to Tamiya to work with, with two big advantages:

1. They come in FS, BS, RLM etc colours.
2. They dry to a semi gloss finish, which is much easier to get to a high gloss foe decals.

It thins with Tamiya X20A, and although it takes a bot longer to cure completely, once it does it is rock hard.
In the Mr Hobby #301 to 347 are they still available where your at ,supposedly they have been discontinued or duplicated into the Mr Color line .
GS make two ranges though, one is called "Mr Color", and are lacquers. The other are Mr Hobby, or Hobby Color, both of these are the Aqueous range (there are two different styles of labels but the paint is the same).