LEER tonneau covers?

Has anybody install the LEER HF350M or HF650M tonneau cover? Looking for a little information, do they use the factory installed rail system or does it need to be removed. Any comments or reviews of the products would be helpful. Just picked up a 2020 Tundra Friday and looking for a tonneau.

 

Same with me. I'm considering a Bakflip MX4, Ultraflex or perhaps a LEER. It's gotta be quality and flush though. I don't want a tonneau cover that is elevated on the bed.

 

Be careful with Leer. I have a 700 fiberglass tonneau cover and moved it from a 2014 to my 2020 and they won't even answer my emails looking for the longer clamps needed when you have bed rails. I had to remove the bed rails and use the shorter clamps for now. The nearby dealer told me they were too busy to find the clamps and sell them to me? Service is an important factor to consider and I don't think I'd go with Leer again based on poor after sale service even thought the cover is very nice quality. If you have a dealer you trust to take care of you and get spare parts that's a different story. I had a Truxedo softop tonneau (highly recommend) on my 2010 and the dealer took excellent care of me. I went in a couple times, once for a fit tweak, and another time for a clamp that I thought I broke, and they took care of me 100% no charge.

 

Purchased the Leer HF650 a week ago and it's already leaking between the panels from the rain.