1. Speed is about 9-10 mph out of the box.
2. Handling isn't all that good if you ask me; the back suspension isn't the best design, because when it travels downward, camber increases. Also the batteries are mounted too high (they should be mounted lower like the MR-02 Mini-Z's). The suspension kit does a lot from what I've heard to let you tune it (I don't have it, out of stock everywhere

).
3. Battery life is pretty good @ stock, but when you start modding it, that goes down quite a bit.
I strongly recommed Rayovac IC-3's. They charge in 15 minutes, and last longer than alkalines

. The bearings help to give you a little more life.
4. They are quite a bit of fun, especially because they don't dent your wallet like a Mini-Z would.
5. Durability is a big issue with these. If you do get one you should definetly
hang onto your receipt. Many people have had problems with their's, and have had to exchange them.
Here is a list of mods that I think are essential:
-Rayovac IC-3's (found at Wal-mart, and
here)
-Bearings
-Stage 2 motor upgrade (and a SpinBrush mod to one of them)
-AWD (If you want to do a lot of drifting)
-Tire upgrade
-Suspension (because you can do a lot of tuning with it)
-5/6 cell upgrade