I think I will end up going with a 6x12. I was worried about the weight. I have a 04 wrangler unlimited (the extended one) with a towing capacity of 3500. I also have a 07 4runner that is my wife's but it has a capacity of 5000. All of my lawns and mulch supply are within 5 miles. I will just have to check to make sure I can back it into my garage.
the 6x12 weighs 980 and the 5x10 weighs 780.