afaik all the Gnu and Lib Tech boards have the wavey edges and some form of the banana-rocker. The higher-spec models have a C2 banana-rocker which is different to the SB (more like the Never Summer RC).
remember the pickle is asymmetrical tho (i think) - 1 side is different from the other so there's a specific toe and heel side, and you use the board backwards if you're goofy, but it's a twin-design so doesn't matter. What's different? The heel side is thicker or something, so it's more responsive to try and balance out the lever effect your get with your feet which makes the toe-edge of a normal board more responsive. Pretty sure the SB doesn't have this.
My Gnu was good for about 5 weeks outdoor riding, in spite of only modest jibbing. The tip and tail took a beating, mainly because mervin boards don't carry the steel edge all around the nose and tail. In contrast my evo has put up with some harsh treatment and shows no sign of quitting any time soon. It also carves very well, which surprised me. I was expecting to miss magnetraction, which admittedly does work well with detuned edges!
sorry to say m8, the Pickle will be a v similar price to the Evo...
2011 pickle is about £425
NS Evo is £460 so pretty similar (and can get reduced to about £390 with SCUK membership if you compare SCUK discounts to NS stockists...)
Goto a FBBB event (if there's still any going near you) and try one