I use Tamiya and Gunze, thinned with either alcohol (methylated spirits/95% ethyl alcohol) or Tamiya X-20A thinner.
Don't buy the small bottles - only buy it in the 250ml jugs. Only use it for thinning - use alcohol, water orwindex for cleanup. Do the maths.. Here in Australia, Tamiya shifted to the 10ml bottles only several years ago. $3.00 for a 10ml bottle vs $9.00 for 250ml. 25x 10ml bottles = $75.00.
I've also just started using Vallejo acrylics, which can be thinned with distilled water. These are far nicer to brush paint with than either Tamiya or Gunze, though you require multiple coats of thinned paint for best results.