Personally, The S15 - No contest. -The Liberty B4 seems special on paper, but its twin turbo set up doesn't work as it should, it seems to lag a bit. But chassis set up is nice, it's tuned more as a GT than a Sports Car. -Type R/S Close 2nd, great on its own, but If given the choice between a good FWD and a good RWD, I choose the RWD. Plus as you know, NA tuning is $$$. -Alfa GTV V6. One of the sexiest engines on the planet. An alfa v6 at full song is addictive and grin inducing, it's one of those engines. Not as accomplished as the Teg in the twisty bits and little things such as paint finish etc not quite as good as the Japanese cars. But not as problematic as Italian cars of the past. -S15, great, strong engine, but what I like best is the chassis set up, the way they handle stock, it's just a fantastic drivers car. This is my opinion and I have had the opportunity to sample all of these (But it was an AUDM S15 so less power but same car). On the down side, they do have their share of interior rattles and cruising on the highway in 6th gear gives a funny drone/vibration which is often mistaken to be a fault or something wrong, but it's just how it is. Happy shopping mate.