Strong points:
Extremely good technical support. Easily installed for the most part. Quite well made. Even includes a cable to allow connection to another similar pannel. Up to 300 watts can be connected together, as the pannel has two connections, to allow tying to another pannel or/and to the battery/controller.
Mounting is simple using the supplied brackets. Nice design. The controller is necessary only if you have a amperage charge capacity of greater than 1.5% of the battery's amp hour rating

At near full battery charge, the cell was outputting about 50% rated power under a noon sun.

Weak points:
The cables supplied are number 12 wire, which is adequate for the lengths of wire supplied, but heavier wire is recommended for longer runs. I wound up using #6 wire per their recommendations, but had to connect to the pannel using the supplied #12 wire, as it has the required their molded connectors.

The solar pannel itself is supposed to be sealed from weather. There is a rubber/plastic bead seal that runs around the inside edge of the solar cell frame, similar to an aluminum storm window. This bead was cut at each of the 4 corners, and because I was afraid it would shrink over time, I covered the corners with RTV. When laying flat, the panel lies about 3/32" recessed in the frame. I have a concern about water collecting on the face of the solar cell, then leaking onto the cell. Note that they guarantee the cell to produce 80% of original power for life of ownership.

It has been installed about a week.