I was just wondering if I could get some advice. I purchased a GMC Denali road bike, (2009) model for really cheap. I know this bike is a POS, but i've been thinking about upgrading. From what I have read, most people say that it's better to just get a new bike, but in terms of the costs ratio, it would be far cheaper to upgrade the whole bike. I bought Sora 7 speed shifters allready for 30 dollars, and can get a front sora derailleur for 8 dollars and rear for another 15. I can also get decent new handlebars for 20 dollars. Not sure if I would need a new crankset, or freewheel. Either way, so far that is 73 dollars. If i was to get a new good bike with these parts (ex: Opus Fidelio, Trek 1.2. It would cost me 800- 1000 dollars) even used it would be at least 500 dollars. So, I don't understand the rationale of many cyclists when they say that it's better to get a new bike instead of upgrading poor parts on bikes like these. The frame is still aluminum and I can drop about 7-8 pounds with new handlebars and removing the kickstand. So, how would it not be comparable to a 500 dollar bike with these new parts? Anyways, i'm just looking for some advice. I don't have any cycling friends and I got nobody to talk to about this stuff, and i'm slowly becoming a cycling freak lol