It's exactly what I expected - and wanted
I have a Martin HD-28 that I wanted to plug in. With so many options, the features that the M80 offered really narrowed my search. I wanted a non-invasive pickup, with an easier way of changing batteries.
The LR Baggs M80 was easy to install, and offers volume control, battery status, and an easily changeable and available coin-type battery. Also, if the battery should ever fail at the worse time possible, a switch underneath changes the unit from an active to a passive pickup.
With all that said, the quality of the tone (to me) is exactly what I expected - and wanted. I run it thru an effects board, and use the ParaDI pre-amp to equalize my sound. Active or passive, it performs very well.
The price was on the higher end of what I wanted to spend, but if you're considering the M1, for an extra $50 or so, you can get the additional features and the new technology.
Aesthetically, the only thing that would have been nice is to have it offered in an optional tortoise to match the HD-28 pick guard and not be as noticeable. I like it... and would buy it again.