While visiting relatives in MS last week, I rented a bike. Had several nice rides with perfect weather all week. I rode the Longleaf Trace from Prentiss to Hattiesburg one day. 43 miles on a rails to trails path. Virtually no other people for the entire distance mid-week. It's a very nice resource for the state. http://www.mylongleaftrace.com/
I also got in nice rides with some locals in Greenwood, and a solo ride north of Greenwood in some rolling hills.
The bike I rented was a well maintained, late '80's vintage Centurion Prestige. I picked it up at The Bicycle Rack in Flowood, near the Jackson Airport - great guys and a nice store. The bike was fine for the riding I was doing (mostly flat), but I didn't like the downtube shifters. Never have. I missed my bike, but was glad to get in the miles to work off all the food that I ate.