I purchased the LL II, and do not regret it. The benefits that I see when handling the waste bucket are as follows
I stand in front of the soiled litter, I flap on the cap of the LL, this remains open. Since the previous stink bombs are invisible inside the bag, I have neither an odor shock, nor does it look disgusting.
Now I take the supplied shovel and can without my yet to press any levers Deckelöffnungswippschalter ... (Litterchamp!) Without holding the cover, easily empty the litter clumps in the opening of the bucket. That fits pretty much all common litter scoop. There is nothing wrong.
Finish: lid, and the lock mechanism pull ... and hey presto, everything is gone.
Of course, it depends on whether you use a more expensive, abundant litter, or a very rough and cheap stray. In the latter, the bucket would be natural full faster. From three cats probably also makes a diaper pail, which is constructed according to a similar system, more sense, because just reinpasst more.
I am satisfied, empty biweekly the content, it is a great relief and simplification of hygiene.