Personally I would stay away from the KRK V8. Compared to Dynaudio, Genelec, Mackie and Adam, the KRK sounded mighty coloured to me. edit: Whoops, ooheadsoo beat me to it. Anyway, I agree that Dynaudios are pretty dark. On the other hand, I thought the Genelecs were rather bright in the critical upper midrange / lower treble areas. But there are usually subtle tone controls on the back of the monitors and eq-ing is certainly another good solution. My favourites are still the Adam P11A but the bass is somewhat insufficient and they don't have a waveguide, which is not a good thing as I was told.
DIY is the way to go if skills and time are at hand... I've heard diy bookshelf speakers for around $500-600 in parts (one had Vifa midrange/bass driver, an out of production Seas tweeter, nice wooden cabinet, and a fairly simple but exclusively-populated crossover) that had better imaging, soundstage, focus and naturalness than all the highly touted audiophile monitors like JMLab Electra 906, Kef XQ1, B&W 705, et al.
I'm undecided myself and actually thinking about selling all my headphone gear to fund some badass diy speakers.
To add another note, for research on pro monitors I think
http://gearslutz.com/board has the best input (quality and quantity) from the pro boards I've looked at.