I can't remember GTR's having horribly dodgy clutches (unless it was caused by abuse), but *shrug*..
Happens to the best of us, but AWD is not going to help you corner hard. In fact, you may find you have more problems because AWD cars are notorious for understeering. You go around a corner, you understeer, you feed more steering into the corner, then oversteer snaps in (and it *will* kick in. the closer to the edge you get, the faster you go over it)... AWD cars are not going to allow you to corner hard or fast. It's a common reason as to why WRX owners end up as small white crosses on the roadside.
If you want to corner hard and fast, spend a metric f uckload on a decent suspension setup, some GOOD, grippy tires (I've got some dunlop LM702's at the momen, $360 a corner, but pretty good, recommended) and then perhaps some high performance driving lessons, where a pro will teach you how to corner fast, safely and effectively. Then you can corner fast, have the fun of a RWD car and not have to work with an understeering awd car.
Technology will not just let you reef the steering wheel and mash the noise pedal and let you live every time. Laws of gravity, inertia and thermodynamics do occasionally have a say in the matter.