I actually think having a good mix of ranges is the best approach, so that you have all colours, techniques and styles covered.
I have the entire GW range, which are great middle-of-the-road paints, but their washes exceed all others.
The Privateer Press P3 range are just wonderfully formulated, and great for getting a smooth, clean finish.
Vallejo are great for sheer quantity and depth of range.
I even use Tamiya, particularly their "Clear" range as a cheaper and more effective alternative to GW's "Technical" range.
I can only reiterate G_H's advice and try a couple from each range, and see how they work out for you
JJ
Resident Smiley Spam Artist and Fastest Fingers in the Stronghold.
Raising the forum's smiley count, one post at a time, since 2008
After all, painting 100 night goblins is something you do in the morning just before you are off to work.
And I think you missed a 0 when you wrote 11 armies. The correct nr should be 110 armies I would think, based on your painting speed.