+1 with the comment about bass traps, better value and results than foam.
monitors are a very personal choice and it really depends more of what you are comfortable with, some for example translate very well, but give you fatigue if you use them for long periods of time. i used to have b&w 805's with a matrix sub when i worked exclusively on music, but i wouldn't recommend that unless you are really accustomed to them, now i have them at home and switched to dynaudio bm6 and a bm12s sub in my studio. i tried the mkII and i think the old model is better. they are under 1k each. the bm15a's are definitively better if you can afford them, but might give you problems if you have 5 of them in a room your size.
this link might be useful:
http://content.grammy.com/PDFs/Recor...mendations.pdf