I see most of the reviews are favourable and I would agree. My one exception to all the hoorahs is the micro power jack at the rear of the receiver. My son and I both have the same units and this past summer his receiver's jack developed an intermittent connection. He had to send it in for repair.
This evening, during a gig, my unit lost power and I had to revert to using tried and true cable. It turned out that the micro power jack had acquired a loose
connection and only worked intermittently. I only use my G10 once a week for about 4 hours and I'm not constantly plugging and unplugging the power micro USB.
If there was ever a "fly in the ointment" for these units, the micro USB is it. Perhaps Line 6 should rethink their design and put in a more robust connection.
Other than that, I think they are great units.