When I had my last 150bhp 1.8t I borrowed a mates 150 V5 for the night. I has a nice engine roar, very V6-ish but performance was less sharp than the 1.8t, is just felt 'flatter'.
Its more of a cruiser than a racer, but bog standard ones often have more equipment than bog standard 1.8t's
The 170bhp version will probably have a bit more bite, depends if you really want a V5 or would modify a 1.8t and get yourself 210bhp instead!