I originally bought a Geo 3.1 (avatar photo), and a used LV1 as a backup because I got a good deal. I soon realized that I loved a broken in LV1 more than the Geo. So I used the LV1 all season with the Geo 3.1 (also bought IV core) as backup. My teammate in Puget used the Geo all event (until he broke his shoulder diving into the snake...gun was fine!)
This year, I picked up a CS1, I have yet to run it through a game, so not sure if I'll keep it or go back to the LV1.
Either way there are some killer deals on Geo 3's, 3.1's. Slap an IV core in it, and for the next 2+ years you'll have a perfectly good backup marker that'll run and gun in the top levels of tournaments.