So I purchased batribike diamond pro beginning of the summer. Two reasons. First was the seating position as my back and neck was suffering with my normal bike, I'm now pain free and upright. Second reason was my friends cycle and like to go for 22 miles down to exmouth and back...you know lunch half way, well I was struggling on my bike for reasons just mentioned, and I was Billy no mates as I only ever went halfway. Yippi, now I join in and the batribike is amazing, effortless when the hills appear, and if I want a rest I just let the bike take over. Since owing my step mom has one and same as me was restricted with a back problem now plain sailing. My brother and wife are about to purchase for Christmas too. Chris was great when I purchased, he let me try out different ones until I was happy with my choice. My first service was a breeze and the bike had usual adjustments. So go on and try one out, you won't regret it.