I have never tried the older model but i have one of the new ones and i love it breaks & jump very well . You can see the one i have in my signature. If i were you i would pm Koinnkid on here he can get you a great deal on a new one. Good luck with what ever you get !
I had a Sledge-1 (actually had two of them at different times), which was the best Sledge, and now have a new Gulyassy/Samsara, which beats the Sledge to pieces.
Are you are wondering which one jumps better or are you looking primarily for a break cue? If you are looking for a great jump cue, try looking up the DEUCE www.youtube.com/killermiller777 check it out!