I remodel and repair homes for a living and rely on my tools to make my living. I've tried every brand listed so far in this thread and the only two brands that I would recomend are Makita and Bosch. Without going into why the others are not good enough, I will say that I've been using my Makita 7 1/4 inch saw for about five years now. I bought it at Home Depot and it came with a 4 1/2 inch grinder or a tool belt. I forget which, but if Bosch had been available instead of the Makita, I would have gone with that. I walk out of the stores if they don't have one of those two brands. Too many failures and runs to the store have tought me that lesson!!!!
I use my saw for framing, cutting angles, plywood and OSB. I also use it for Hardi with a Hardi blade, and I use it for cutting concrete with a diamond blade. The power is amazing, and in my experience, it's the best saw that I've ever owned.
Take a chance on the others, or buy quality that will last and get the job done.
Eddie