DoogsATX
I've tried Humbrol and White Ensign enamels, and I like Model Master better.
They're harder to get your hands on, and harsher stuff, but Gunze's Mr Color lacquer paints are amazing, and if you want something that sticks, it's hard to do better IMO.
I'm working over a 1/32 262 right now with Mr Color, and I may never use anything else again for the main coats. You can spray and spray and spray, and it never clogs or sputters no matter how low you go or close you get. The color quality is incredible, and very consistent. It should be written in stone, however, that thou shalt not use Mr Color without Mr Color Leveling Thinner. I don't think it's that expensive... $14 for the big bottle, and that bottle will last a dozen 1/32 scale aircraft easily.
You absolutely do NOT need the Mr Color thinner to clean the brush. Grab a cheap can of lacquer thinner from Home Depot for that. Works like a charm. I ordered a set of RLM shades and basic colors from HobbyWave, as they had them all in stock and do 'by the box' shipping, which really works out great if you're getting a bunch of stuff at once. SprueBrothers carries them, but they have stock issues. Nothing is more irritating than clicking through a website, selecting some RLM 81, some 82, a couple of 76... oh wait, they're out of RLM 02.
The only issue with this stuff is that you can actually hear the Earth scream when you open the bottles. Strap lines from the respirator also makes for interesting facial effects for half an hour or so after painting.
I still use Vallejo and some MM acryl for all the small parts. It's just a nightmare trying to get them thinned just enough to spray fine cammo lines on the big pieces. The chemistry required varies by paint color, humidity, astrological arrangement, etc. Tamiya gets good press, but for best results you need to use their thinner, which IIRC is alcohol based. Smelling up the joint contradicts the biggest advantage of putting up with acryls.