seats eh? well if you want a nice seat firm seat get one from SDG. There're a bit pricey but well worth the money. A great seat at a great price (16.99 give or take a dollar) that I use own one of my bikes is the Odyssey Pro w/ kevlay back seats. Its quite soft and is narrow enough so it keeps out of your way when your pedaling.
The mountain bike SDG seats are expensive, but they're SDG BMX seat is also another seat to look at. It's about 30 bucks. Have fun and go ride! oh yea get these seats at a good price at www.danscomp.com These are BMX race seats.