both...because I find advantages & disadvantages to both. Plus variety is nice.
Mountain bike shorts (I like pockets)...this is an upgrade from earlier when I just wore an old pair of shorts (not biking) but the new bike's seat is a bit harder than the old one and 30+mile rides were getting a bit uncomfortable.
Oh and a Tshirt mostly though my wife bought me a long sleeve jersey just recently so I am slowly becoming a conformist
My pair of PI Elite bibs were delivered today (ordered them from REI last week since the store was out of stock).
I like both. However, shorts allow you to wear any shirt you want. Can't say that about bibs...................
"Retirement is the best job I ever had!" Me, 2009
Specialized Crosstrail Sport - '08
Nishiki Sport - misappropriated from my youngest son (circa 1984)
Marin Stinson - misappropriated by my youngest grandson - '01
"The Beast" - 1990 Schwinn Airdyne (in the basement for winter torture)