Motorbikes
Estate is good but again a bit too open and you cant snipe from that many locations. Although I found if im on the side of the house up on the hill..I go in the house and out onto a little balcony (the side of the greenhouse or whatever it is :S)...get a few people from there
Also, just down the road from that house is a wee garage with a truck parked infront, go up to the raised section in there and look up towards the house.... everyone runs in that front door so you could get a good few kills from there.
Bring back the days of Overgrown, Backlot, Bloc, Strike etc!!