I went for the heavy-duty version of this hoist - 50kg rated instead of 25kg, even though the MTB bike I'm hanging off it is only about 15-18kg. Due to tight space constraints, I am using the hoist in a non-standard, so most of the weight goes onto one hanger. (The instructions tell you you must place the brackets directly above the lifting points.)
I think it was worth the extra money for the flexibility, as you can control both hooks independently, whereas with the 25kg version, it's a single pull, so you can't control where your wheels go as you hoist.
The brackets and pulleys are chunky and substantial in a positive way, in that they feel like they are going to do the job without ever bending and are not remotely flimsy. So far, I've had no problems and had enough control of the hoist to not smack my bike into the wall once.
The box includes the fixings for attaching directly to timber joists, but these were pozidrive screws, so you would need a decent drill/driver and a sturdy ladder to get them right into a proper joist. I replaced with M6x70 coach screws (i.e. bolt hex head), which were much easier to drive in while balanced off the side of a ladder over a stairwell...
My only criticism would be that the rope feels like it might wear quite quickly with daily hoisting up and down of my bike. The instructions do say to replace at least once a year, which is a bit much, but being a product of the USA, this is presumably to cover the manufacturer against the standard lawsuits. When the original rope goes, I'll replace with something more trusty from a chandler.
That said, it's a great product, strong and robust, generous on rope length and much better value than buying component parts and trying to cobble something similar together!