I`m just starting my looking and tire kicking in hopes of getting a folder in the next few months. While I could live with a top gear of 80-90 G.I., I`d prefer what I could get with a Capreo. I haven`t heard anything bad about them, but I`m a little suspicious that the cassettes will be fast wearing. Also a tiny bit concerned about the hubs themselves, but not so much as about the cassettes. Any major problems with the system? And just to confirm what I`ve been led to believe, they`re compatible with whatever RD and Shimano 9-speed shifters?