I have a B&D miter saw and angle grinder. I have put both through the mill and they still work great. Used the miter saw remodeling a few houses, and a lot of other Stuff. I have used steel cutting blades on it and have cut a while lot of steel for things on my jeep. It is probably over 10 years old i'd say, and it still works great. I only wish it had a bigger blade. 10" is just not quite enough for cutting certain things sometimes. As for my angle grinder, i have used it a lot this year, and it's not very old, but it works great. For $30 I wouldn't take it back. It has no signs of wearing out. But that's just my .02
Also, I have a skil brand skill saw and it works great too. I haven't had a chance to really push it to the limit yet, but it runs great.
As for milwakee cordless tools, I have a set of those, 18volt, Drill, sawzall, skill saw, and light, and they work great. I have worked them over pretty darn hard. My only complaint with them is the batteries, they seem to give out prematurely and I gotta buy new ones, and they aren't cheap. It is about $90 for like 2 batteries.
Hope this helps. Klinton