Although the TT armor is a great case, I have one myself, it is very heavy. Maybe look around at some more cases and find a lighter one? It's more of a personal preference thing but having a heavy case can be a pain if you have to do any work on it.
And about the vista/game issue, it's old news IMO. I have been running Vista for over a year now and haven't had any problems with games since like the first month or two I had it.