Ya well 600 plus combos are mostly taken up with the macros themselves (in IsBoxer the wow macros it makes does not have to tie to the actual key you press). Keep in mind that each step requires a different in game macro key set. So if you have IsBoxer Macros with long steps then you eat up a lot of those combos. 600 sounds like a lot but it isnt.

No one can remember "Was it alt-ctrl-1 or shift-alt-1" in the heat of battle, a spicific key is going to be a lot better. Not to mention taking your hand off the mouse if you have to isn't a smart idea eather.

Ya the Razar has mechanical keys which are way better but 34 seperate macro keys is the winner for me on the steelseries.