Personally I've always used western plows.... so I can't say anything bad about any other brand. I had them back in the late 80's when I worked for someone else, and my first plow, working for myself is a western Unimount.
I like it, as it's simple, as I rebuilt it from top to bottom, myself, including the pump, and it's easy to service. I have a 3 spring pro plow 8-6", but I have a 3/4 ton truck with front leafs, so it's no problem with the weight. Truck pushes through just about anything.
You're going to find out that if you start using it a lot, and you get rough with it, you might just start breaking parts of your truck. 1/2 ton pickups are ok for occasional residential use, but the reality is, if you're going to be plowing a lot..... you should upgrade your truck to a 3/4 or 1 ton frame, and worry less about breakage.
Good luck with the new venture.... and don't forget your slip and fall snow plowing insurance. It's inevitable that we will all get sued at some point or another..... especially if you do commercial lots.
92 Cummins with a 8.5 Western Pro Plow