if you can afford boost for a vr6 go vr6... but if your not looking to spend that much go 1.8t b/c you can make alot of power for cheap...

i've owned both... vr6 is nice torquey strong motor but 1.8t has boost... stock to stock vr6 wins; with bolt ons 1.8t wins, w/ boost vr6 will demolish 1.8t.