I'm happy with the LG Neo Power shorts, enough that I bought a second pair. In general, cycling shorts is a product category where higher price does mean better quality. If you're gonna be on the bike long enough to ride 100 miles, it's worth the investment for really good shorts.

It looks like the RBX shorts are available in two lengths. If you have the shorter ones, your best bet might be to get the longer version and turn the cuffs up on them.

http://www.specialized.com/us/en/ftr...s-road-apparel