Don't go cheap. Milwaukee is the best bang for your buck. Glad I bought mine. Why do I say that? Let me give you my 4.5" angle grinder experience. I bought and used a cheapy. Then I bought another cheapy. Then I bought another cheapy. I kept the third running with parts from the first two. All different makes of cheap, but all kind of inter changeable. All junk. Last I bought quality for about the same cost of all three peices of crap. It is still running, and running, and running. It doesn't over heat in the middle of a cut.
Sure, you can find cheap that will work for "awhile." Throw away tools, versus quality. Face it, you're going to be around a long time. You're going to use tools a long time. Buy once, buy quality, and never need to buy in the middle of a project. Frugal comes in different flavors. Quality is really the smart frugal.