I've got a Ridgeback Nemesis Hybrid bike, but I feel it doesn't deliver the output I want from my input. I'm thinking about going for a racing bike to maximise my effort. I've read some good things about Boardman bikes, but that's all. I'm not knowledgeable enough to read bike specs and know what's what. I appreciate your suggestions. p.s. I live in Glasgow, so single speeds are out!