Hi,
if you want red switches, do not get browns. Browns do feel very different.
I'm using blacks for gaming and blues for typing. For gaming I strongly recommend a linear switch. The reds are probably going to serve you better than the browns.
If you want to change the keycaps of the keyboard a standard bottom row would be better, because it is easier to get the right keycaps. (as Infiniti already stated)
If you don't want to change them, and just use the keycaps that come with the keyboard, bottom-row layout shouldn't bother you.
I vote for the Ultimate, just because of the red switches.
Reds are really nice switches for entering the world of mechanical keyboards and they are perfect for gaming.
If you really want to go for browns, I would take the XT over the TK, because of the standard bottom row and the build quality of the TK (it's bad).
I bought a Quickfire TK with browns, but I had to send it back, because I disliked the build quality and the browns (to me) felt like broken reds.