Originally Posted by khuon
My first question would be: What are you unhappy about with your current crankset? That should help you determine which cranks will rectify the defficiencies. In other words, what problem(s) are you trying to solve.
Good question. I had to think about it for a while, because I don't know how to explain. I guess it's just the feeling that it is not stiff enough. I get some feedback, especially when climbing, or sprinting. After tough rides on rocky terrains, it starts to make some weird noises (like squeaking). It continues for a while, and then suddenly stops. I guess it stops some time after I slow down. My frame and the bottom bracket are in perfect shape, so I am not sure what the cause is. It just doesn't feel right.
Also, the chainrings are wearing fast, and I have to change them soon. I thought that would be a good time for an upgrade. Well, all the cranksets that I listed above have 7075 aluminum chainrings, so wearing will be an issue with all of them I guess.