I am looking to replace my dewalt 4-1/2" grinder. It has served me well for 10 years. The pin that locks the wheel so I can remove it has been failing for awhile. Really the casing is to blame. they surround the pin in plastic. This has since been redesigned. I am probably going to buy another Dewalt. all my power tools are Dewalt. I am not looking for a cheaper option, but maybe an optin. Who uses Milwaukee? they are a little more money. The only feature that I have to have is the on switch has to lock. I do not want one with a paddle.