I've got one mate - i use it as my day to day runabout...
Mine's on 136k and apart from having to turn the ignition key to stage 2 three times to thoroughly heat the glow plugs before starting in a plume of smoke i've not had too many problems.
Personally i'd suggest some aftermarket discs and pads as i found the brakes a bit below my expectations...
Not astoundingly quick, but 2nd gear pulls quite nicely.
Apparently the "dervdoctor.co.uk" can tweak the boost and the fuelling to make it over the 100bhp mark.
If you can get a reasonable mileage one with a good history for a good price then i'd say go for it