GD: The Quark 125B is nice, but I think the MM is better in some ways. Plus, the footprint is much smaller. Personally, if you never plan to go above 4s and 100A continuous, I'd stick with the MM. Even then, the MM has been unofficially said to be able to use 5s. The Quark has trouble at 6s, so it is effectively a 5s ESC unless they have fixed that issue by now. So really, you're not gaining much voltage-wise with the Quark.

If you want to "feel" the Quark before using yours, you can test drive my Revo sometime if that will help.

BTW: you have two MM or regular Mamba systems coming? Is it a motore/ESC bundle or just the ESC?

MambaMax systems.... It's a long story but I ended up with a double order of sorts for myself and another racer here. I will actually have a 4600, 7700, and two 5700 systems. Probably at least 3 will go up for sale to recoupe the money spent. I have $225 invested in each one so I figured I would try to ebay them and get as close to that as I can back out.

I think CarzyJr is running a 9xl on his mamba in the revo...

Well, I guess I underestimated the Mamba quite a bit.

What kind of speed and runtime can I look for on 14 cells with the 9XL and 10XL? Which one would be the smarter choice for everday bashing? nothing special.

I would choose the 9XL. I have a 10XL. It did descent on 14 cells. I would guess high 30's. I would choose the 9XL, though the 10XL was a BEAST on 16 cells. Tons of torque!

I would go 9xl with 14. I ran my 9xl on 5s lipo too. My 10xl still seemed faster on 5s though, not sure why.