The 2011 Whyte Montpellier was a three grand exercise in brand awareness as much as it was a bike for sale, but the 2012 incarnation comes in at only just over half the price whilst keeping some of the aspirational componentry bolted to Whyte's MTB-derived urban frame. Overall it's a cracking bike, fun and versatile, although the existence of the £999 Stirling is for a lot of people going to provide the biggest disincentive to buying one.
Folding bikes are always a compromise between the folded package and the ride characteristics. It's not a straight line correlation but the basic rule is that the bigger-wheeled bikes are easier to get on with on the road, but not as easy to hoik onto a train. They don't get bigger wheeled than the Montague: this is a full sized 700c bike, so don't expect it to fit in your glove box.