I'm around 205lbs and a competitive runner but looking for the right shoe to support my weight as well as finding a shoe that is not too bulky to run in. I know the chances of that are probably slim. I am using the mizuno wave right now. The first ones i had were quite comfortable and didn't bother my back at all but seems like this new pair/ design of the mizuno wave (6 mths ago) are killing my lower back. What shoe has worked for you heavyweights? Suggestions?