Not a lot out there that is decent besides Leisure Concepts and Cover Valet. I sell Leisure Concepts products but don't do a lot with the Covermate 3. It is on the more difficult/time consuming to install side, but it is a good lift. If you do get it, make sure not to get the Covermate 3 Eco version.
You could also maybe look into the Ultralift -w- hydraulic from Byron Originals. I brought one in a few years ago without the hydraulic and thought it was a quality lift, but there was more assembly than on the Covermate 1 from Leisure Concepts so we chose to stick with the Covermate 1.