http://www.bike24.com/manufacturers/Shimano.html

If you scroll down, you'll see the groupsets. If I had a choice, I'd just go with a cheap Nashbar frame then a good groupset. lol

Actually, my personal preferences are all over the map. I got a Nashbar touring frameset. I wanted friction shifting on a light touring bike so I bought 8 speed Ultegra bar end shifters mounted on Paul Thumbies, Deore LX rear derailleur and an 8 speed new old stock Sora crankset and Sora front derailleur. I got all the parts, just hoping it will work well when I build the bike before this summer.