I went with a Gorilla 2500 waterproof. If you go that route, you will more than likely have problems with the mount causing the positive terminal hitting a support, nothing that a little modification can't fix, especially for the price.
A group of use went riding yesterday and I had to use it several times to pull a couple of the guys out of the creek. Another guy with us had a Warn on his Polaris and the Gorilla wasn't any louder than the Warn and they both seemed to be equal in power, he just had about 15' more cable than me! I plan on switching to the synthetic rope shortly.