To haul a 110 you are look at something no less than about 8500 lbs line pull, the 2000lbs winches are okay for pulling a boat onto a trailer but that's about it.
The likes of GEW, Champion, Come-up all do 9000lb winches for £350-£500. These are all good for occasional use but if you're looking at challenge events for the future then you should be look at Warn or Superwinch.
I got a new GEW 10000 off Ebay for £320 delivered, so you can get them. :D