So I realized that I have upgraded every single component on my original stock 2005 Langster outside of the headset and the Crank/Chain Ring. Some of these were do to parts breaking over time (bottom bracket, bent rim from a crash, etc.), and other for cosmetic reasons (silver seat post, more attractive stem). Each time I upgraded I generally sprung for higher quality components. Anyway, not trying to just toss my money away or anything but I was wondering if there is any real point in upgrading to a higher end crank or chain ring performance wise. I think whatever is on there now is pretty good but I have noticed that there are some mighty expensive cranks out there and am wondering what is to be gained outside of aesthetics from buying one of these. Cheers.