This is the second rig that I have ADCO cover and for us works great.
It is a bit more expensive than other covers but it last longer because if very well made and reinforced.
As was said, it will last ~4 years maybe more depending were you live.
We keep our MH by our house and if it will be more than 2 weeks w/o moving I put the cover on it.
That means put it on and take it off ~ 5 times a year.
IF you learn how to fold/roll it when you take it off it is really easy to put on (on a day w/o wind) but you do need to go up the ladder pulling it up with you or have someone bringing the tip of it to you when you are on the roof.
We take no more than 15min to put it on and ~30min to take it off (counting packing/rolling it properly).
If you can go up a ladder and don't have problems with altitude
, it is completelly doable and, for us , worth the $.