I just had a Liftmaster 3850 installed (in North Jersey) for $450. It replaced an old/busted Genie unit. This unit is QUIET and thus far works perfect. It was worth it to me to have it professionally installed. The old Genie did not have the Safety Reversing Sensors and the new system was installed with them. I agree with the prior posting: Very nice so far... The installer did not provide the manuals to the remote or wall unit, but I downloaded them from the liftmaster.com website.