Gillette M3 Power Nitro... good?

At the store, this razor was $2 off, making it only $.50 more than my previous razor, the Mach 3 Turbo. Also it came with an extra battery and some shaving gel that looks pretty good. My question is if the battery powering actually does anything, or what you think of this battery-powered stuff in general...

An interesting thing I did not know: all mach 3 blades fit all mach 3 razors. Good news since I just bought a 4-pack for my Turbo, but the Nitro is for my gf's house. Oh also, I'll be having sex shortly and I crushed the tables today. HA!