i have an old shogun 2001 mangaloy frame with cheap weinmann wheels, upgraded shimano tiagra brake/shifters and generic drop down handlebars. the crank and gears are also shimano, i dont think 105. its a pretty good little bike, but it feels a little squished together. ive been having problems with the shifters and the brakes coming misaligned...now some guy is selling a trek 1.5 for 500 bucks and im wondering if i shoudl just buy that and sell off this old bike. i bought my current for 300 and i bet i could still get 300 for it. i dont want to buy a brand new bike that is going to be problematic, and i dont want it to be heavier than my relatively lightweight shogun. any comments???