I asked the same question a few weeks back in the buggy section and got these replies when I was considering one for my 808,
http://www.rc-monster.com/forum/showthread.php?t=12970
The final item that persuaded me against it was Per BrianG RC calc, per the input your build needs to weigh under 7.7 pound in order to run a 1509 so I went with a 1512 instead and couldn’t be happier..
Best of luck in your quest..