Not yet I guess. Had problems with the 800's, shaft, coil ears, arm cuff and some had some drownings, and control pod issues. SEEMS like thus far, the 900's are good to go.
I just bought one. I haven't been able to detect for a few years because I've been working like a dog in the Charleston, Oregon shipyard. I'm excited to try this detector out ASAP!
None here either. Minelab took a heck of a mahone on the 800 and fixed all the issues and made an even better Machine on the Equinox 900. They are outstanding!