I owned one of their Avanti models, wasn't too bad, some of the frame finishing was a bit Friday afternoon.
As for the Ti Replica I think you can actually source an original 753 Ti frame for about £500. The replica is not much different to the 531 Team Banana replica, which you can get for £150 in decent nick. There's only 125 of the Ti being made so it's a collectors item, hence the £2k price tag.
Wiggle had the 2012 Airlite 400 for £583. Not bad really for mostly of 105 componentry.