I went tubeless.
I changed the stock rims and tires on my mtb to Mavic rims with Kenda tubeless tires filled with Stan's. I like the fact that it's lighter, runs on lower psi, is durable and holds air well. I put Stan's in my tires about 1 year ago and I've not had any problems with it. I have yet to do any patch job on the tire but I do carry a tube as a backup as well as a tire puncture repair kit.
The initial set up can be messy and time consuming so check with your LBS to see if they are comfortable converting to tubeless. I have ordered the valve stems with the removable core valve that allow me to refill the tubes so that it will be less messy.
Website for Stan's:
http://www.notubes.com/home.php
Stan's messageboard:
http://messageboard.notubes.com/



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