I bought a pc from Mesh. It dint work and nearly 4 months later am still trying to get a refund. they have agreed to this but still waiting.
Replaced it with a DELL 8400. £100 more but it works great, has a wonderful screen- I upgraded to the better 17inch TFT(the one from Mesh had dead pixels!) There is a 3 year on site repair. It was also delivered quickly. Ordered on the Saturday got it on the Tursday. Aslo delivered in the evening. Can't fault them.
Hope this helps.
PS chose the system and barter them down. I got a discount of £100 and probably could have got more if I had held out.