These cards, it won't easily fit into mini computers or some computer towers (unless you push really hard). It didn't fit in my other computer because it was just a little too big to fit in. The one that I have was a GTX. The power consumption also reaches a peak (not by far).
Over here, or at anywhere else in the world, GTX are more expensive than GTS. To finish, you should note that the price gap between these two graphic cards corresponds to its performance gap which means that the GeForce 8800 GTX is much faster than the GTS version.
With a GeForce 8800 GTX and a 24" 1920x1200 monitor, you will be able to enjoy all the graphic advancements currently available.