Milwaukee OneKey…sucks?

Anyone else using OneKey? 2 years ago I spent like $10,000 upgrading our tools (old Milwaukee M28 system stuff) to the M18 system, but with OneKey….and it seems like it just stinks. Anyone else use it with good results? I can’t see where the tools are half the time. Batteries are dying, or it will show that it’s at the place I know it was at 5 days ago…but then I’m holding the tool in my hand. 

Have you had good luck with it?