Fast to respond to emails before you buy, but expect NO response afterwards. Bike delivered (eventually, after a LONG wait for it to be 'custom built') with no instructions, no tools and no customer support whatsoever. The bike makes suspicious clicking noises already and will have to go to the shop as Mango can't be bothered to reply to me all week. Original Single Speed bike seems ok aside from the clicking. Saddle is relatively comfortable. Bought it because I didn't want anything special and it is indeed not anything special. Feels very similar to buying from sports direct - once they've got your money that is that and don't expect any help or customer service at all. To be honest buying a bike from sports direct would have probably been less stressful. I am not sure whether to give a 1 or 2 out of 5 as the experience has been woeful but lets go with 2 because I'm a nice guy.