Part exed last year. The sales process was very quick, no hassle, everything went through fine. Got a fair deal on our house, no problem on that front.
We bought a 4 bed detached. Really like the layout, big bedrooms and bathroom, not loads of storage. However we had the same thing with the toilet seats - look really fancy but are utterly, utterly shit. 3 toilets and every seat has broken. They're not the sort you can easily buy at B&Q or wherever and the fixing is near impossible.
The extractor hood was wonky, the patio door lock didn't work and we had to get emergency repairs out on a Friday night. The front door spyhole was in back to front! The floors were uneven. The bedroom doors wouldn't shut to properly, which was really annoying for us as the dog could get in when we didn't want him to. The security chain on the front door had a chain which didn't match the catch. And so on. We kept ringing the after sales service but had to chase and chase before things started getting sorted. Still not finished nearly a year in.
That said, we would have struggled to sell our house in the area we were in at the price we wanted and we love our new street, each house is slightly different than the one next door so it doesn't look too 'boxy'. Despite the snags I am glad we moved and would much rather be on the phone to them and have it their problem, than be patching up an old house and throwing good money after bad. The snags were annoying but nothing that meant it was unhabitable - no dodgy electrics or plumbing. On balance I would say go for it but check every finish with a fine toothed comb!