I just ordered these Louis Garneau Silhouette jerseys:

Sleeveless
http://www.teamestrogen.com/products.asp?pID=17975

Shortsleeve
http://www.teamestrogen.com/products.asp?pID=17964

They are incredibly long. I didn't have any problems with it riding up on my ride. I'm 5' 9 1/2" and always have problems with everything being short. I'm sure I'll be asking the same question in regards to arm length when it's time for the long sleeve jerseys.

I don't know if all of the LG jerseys are cut this way, but I'd suggest this one.

Kerry