The Diamondback Topanga is selling for 9 at Sports Authority. It comes with disc breaks and other stuff. However, I read on this site that Diamondback bikes are cheap because they use cheap components and are not very durable. I went to my local bike shop and they showed me a
Trek 4500 for 0 (no disc brakes). He told me this model was an entry level model. I want to purchase a good durable bike. Is paying the extra 0 worth it?

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