I'm currently in the process of evaluating audio equipment for a prototype that requires CNC machining. I've explored local shops, but their prices are prohibitively high. After some online research, I've come across names like Xometry, Protolabs, Fictiv, and RapidDirect. While Xometry and Protolabs have higher prices, the latter two seem more reasonable. Has anyone here used them before? Any suggestions or recommendations would be greatly appreciated.