echh, the CR18s suck!
maybe youve had good luck with them, but they were weak little pieces of crap for me. bent after only 10 rides, not very strong at all. seems ppl at mtbr dont like em either,
http://www.mtbr.com/reviews/Rim/product_22618.shtml 2.92 outta 5 isnt that great.
i have since upgraded to sun rhyno lites, which are much better. ive ridden em about 25 times now and they still look new(cept for the dirt). heres the reviews for them
http://www.mtbr.com/reviews/Rim/product_22623.shtml 4.63 outta 5, now thats better
but dont think im going by reviews, ive had experience with both and seriously the CR18s are not what you want. i simply dont think they are tough enough, my rhyno lites have taken a beating and have come through with style....