My 1 star relates specifically to the G-Explorer, which is sold as an all terrain wheelchair. We found it flimsy, rattly and no better (and rather noisier) on a rough surface than our normal NHS wheelchair. It couldn't begin to go up a gentle grassy slope and its small front wheels couldn't even go over a 2 inch kerb that our basic wheelchair can manage. From our experience, if you want a genuine all terrain wheelchair, the large wheels need to be at the front. MobiQuip delivered it quickly - although we didn't get a one-hour time slot, which meant we had to wait in all day. But there's no free return, so it cost us £50 to return it, which is extremely unsatisfactory for a wheelchair that is, frankly, mis-sold as being 'all terrain'.