1) It's an unusual and interesting design.
2) Some types of loads don't wash very well, if the tumblers (clothes lifters) don't have enough friction on the items to roll the load. I once watched a load of 21 shirts not roll even once through the entire wash period. I restarted the cycle and helped it roll several times.
3) It does nicely when the load rolls properly -- heavier items such as towels/cottons, jeans, blankets, and mixes of heavier and lighter items.
4) It can be touchy at balancing for spin. Rinse spins will skip if it can't balance in 3 or 4 (whichever) distribution attempts. The final spin tries more times and will refill/tumble a couple times before giving up and beeping for help.
5) The top-of-line FAV9800 is the model to seek (has water heating, LCD touchpanel) but those are rare.
Technical:
6) There's no brake, takes a LONG time for the basket to stop spinning (it's heavy, much inertia).
7) The lid locks (plural, both sides of the lid) are difficult to trick for watching the machine run. Easiest workaround is remove the clips for the top so it can be easily raised at any moment.
8) The lid can't be opened during fill. Water flows through the lid via jets that spray into the rear edge of it for flushing through the dispensers (both detergent which is mounted to the lid and the bleach/softener cups at the front corners). The top can be raised a bit but too high and gravity affects the water flow through the lid.
9) The top can't be raised if the bleach or softener dispensers are used for the load, the contents would spill out.
10) Raising the top during spin (initial acceleration or at full speed) triggers an accelerometer on the control board, which makes it think the tub has impacted the cabinet and it'll go into a redistribution routine. The top can be slightly raised/lowered VERY carefully and slowly without triggering redistribution. This issue doesn't occur if the lid latches are tricked for watching instead of raising the top. The accelerometer seems to drop-out at some point during the final spin so raising the top doesn't stop it but I haven't figured out exactly when that occurs.
11) The drive pulley/torque spring clutch can be a problem. Mine (a new-in-box machine) went bad in 6 months (repaired under warranty, because why not instead of doing it myself) causing the tumblers to rotate during spin which causes distribution/balancing problems and tore a couple towels. A typical problem is deteriorated lubrication of the roller-bearings. Service docs don't reference it but the pulley can be disassembled, cleaned and relubed ... as long as the problem isn't a broken torque spring. I've disassembled and lubed the pulley bearings once since the repair. I rarely use the machine, it's still essentially new-in-box condition at 14yo (16yo per the serial). The tub seal and drum bearings are a common trash-the-machine failure, per what I've heard.