For price range, I don't want to spend over $150.
For switches, I'm not sure what I would prefer. I don't know how each switch feels to make a determination. Overall, I've read that Cherry Brown switches are to be avoided, Cherry Black are stiff and preferred by FPS gamers, and Cherry MX Blue are preferred by RTS gamers. From this perspective, I would say the Cherry MX Blue would be the preferred switch.
I haven't limited my selection to these two keyboards, these are just the two that I have liked so far. I haven't read about WASD, Leopold or CM Quickfire. I looked past Filco because I heard they are hard to find in the US. Rosewill to me speaks mid-range quality. I could be completely off my rocker here, as I have no experience with Rosewill merchandise.
I am open to any suggestions for keyboards other than the 6Gv2 or the Das Ultimate. I mentioned them to get testimonials for those who have used them.