Based off your budget, I would check out some of these Lipos from Value Hobbies:

http://www.valuehobby.com/power-syst...city_range=180

And a nice thing is shipping is pretty cheap.

I bought a 6000 mah pack from them about a month ago and so far have been impressed with what your getting for the price.

As far as SMC goes, there is a following on here saying they are the best, I have also seen and heard bad things about them swelling. That alone would keep me from ever using them.