Probably worth mentioning that if you are in the UK Terrasenics
are the official retailer.
They also sell some Jarvis and Pegasus pre-painted stuff which is not bad value. The Jarvis stuff is actually quite small when you put it on a Mordheim battle field, BUT if you are clever about what you get it won't be too obvious - for example a cottage will look daft (unless its a halfling house), but a set of columns, or ruined walls will look OK. At my club there is a lot of jarvis for WFB games and other fantasy games - I tend to nick some of it for the Mordheim games I run and use it to dress the table round the actual purpose built Mordheim ruins - it adds to the table nicely and fills in the 6-8" 'deadzone' round the edge of the board a treat.
My personal feeling about the CNC stuff is that at current exchange rates, and in the absence of some of the better value combi-deals through Terrascenics, it works out a little pricey for what it is.