The VAG 1.4TSI (180)s are the choice engines IMO. A few guys on SCN have been told today from revo that the stage 2 on the 1.4TSI (180) engines is making 245hp consistently graphs and software are officially released tomorrow.
now if guys in stage 1 220hp ibiza cupras are managing 5.5seconds 0-60 @ GTI international (one guy got sub 5 seconds!!) and also managing 13.5 second 1/4 miles @ stage 1, id say with the extra 25hp of the stage 2 map and mods its surely got a 13.0 1/4 and a consistent 5 sec 0-60 sprint in it.
The vRS is Vat free, and i think the seat is as well. that makes the polo a bit expensive in comparison. definitely the polo though if that went vat free