I've had my Mango 3-speed for 2 and a bit years, it's held up pretty well doing 8 miles a day commuting pretty much 5 days a week, rain or shine. I'm starting to notice a few areas of corrosion but not on the frame (except where the odd scrape has broken through the paint). Most of the bolts have a fair amount of rust on them though and I have had trouble adjusting brake calliper tightness as a result of this. The hex sockets in these bolts seemed to round off very easily. I've been through 2 sets of tyres and 2 chains, but that is to be expected. (Apart form these two colour-coordinated parts I get other parts (brakes, tubes) from elsewhere because the ones on the Mango website are a little expensive) I've had no issues with any of the bearings (crank or wheel) There is also a little corrosion on the wheels where the valve passes through the rim and the valve locking ring has rubbed some paint away. The saddle is very comfortable and although it is now looking a little worn in terms of colour there are nothing falling apart on it. I chose Mango because of the customisation options for colours (yes, it's sad isn't it?!) and the bike still gets looks. I bought the bike through Cycle Scheme and at the time Mango did not support any cycle to work schemes. So I didn't deal with Mango directly but went through Bikelands of Exeter. The process was pretty painless though. When the bike first arrived, it had the standard black tires instead of the blue ones I ordered. This was sorted out very quickly with the right tires arriving the next day. Mango said I could keep the black tires as spares at no cost. All in all I am very pleased with my bike. I would consider getting another in a year or so. Although 3 gears is ok, it would be great if Mango could offer a 8 or 11 speed hub gear option and possibly a belt drive system. By the way, I wouldn't call myself a "cyclist". I am merely someone who uses a bike to get to work, so I'm definitely no expert.