Our Guardian blew up for the second time (both times were thunderstorms) and have just replaced it with the $384 Chamberlain.
Installation was pretty straightforward except I wasn't allowed to install it unless I had an ex builder mate come and supervise me. It took us a couple of hours but we were in no hurry. I am impressed. Very quiet. All connected to Home assistant via Opengarage.io but the old was as well.
The instruction videos were a bit useless and lacked detailed information but were quite entertaining. The instructions were fine except you need to ensure you have a decent attachment point on your ceiling which may not be in the same place as the old one.
Initially we got someone around as existing door had come off its rails on one side I had managed to get it back on (again) but thought it would be useful to get someone to rebalance (centre the door) as that was I suspect contributing to the issue. This required a damaged vertical track to be replaced so my job was more than just the door opener. At the time I didn't realise that any sectional opener can be used (so long as it is appropriate for my door size etc) but I suspect that would have require work if I did myself to ensure any new opener could use the existing rail to the door and height adjustments etc. I'd rather get a professional to fit.
Does your $384 Chamberlain one belt or chain ?
Mine can take a wifi module but that is $320!