Combo's statement that the GR design with the round bucket is "inferior" is a personal opinion.
Having had multiple units o each, Whirlpool built-in and GE built, I find the GE 'round bucket' design to have several advantages. It has a higher compaction force than Whirlpool, the handle on the bucket allows one to just pull it up and out of the compactor, and the metal snap rings holds the bag in place so it does not fall down into the bin upon compaction.
I like the Whirlpool, even though the rectangular bin is larger, the GE has a higher compactiin force and the hold a roughly comparable amount. Judging by the average weight of the compacted trash, I would say the GE holds slightly more.
My two favorite things about the GE round tub is that it holds the compaction bag tightly in the clamp retaining ring. Whirlpool's methodologies frequently allow the bag, whether paper or plastic, to fall down into the bin requirements retrieval if the edges and reforming it over the edge of the bin.
The convenience of not having to open up the side of Whirlpool's bin, take of the retaining strap, when used, then transporting it to the curb or main trash tote, is time consuming. Often glass shards, or other sharp objects, protrude through rips in the bag, reading caution as they often fall through the bag while carrying it to it's destination.
With the GE, I just grab the metal handle, on the bucket, slip it up out of the machine and carry it downstairs to main trash tote outside. If the bag has gotten and rips in it, and anything falls through, it usually goes right into the bucket. In those cases, after I unclasp the retaining ring and lift the bag into the tote, and the dump any particles in the bucket right into the tote. Done. With the Whirlpool sometimes a broken bag will leave a trail of particles on the path as you attempt to carry it outside. I have also been cut by inadvertently rubbing against a glass shard sticking out of the bag side while trying to carry it outside.
Certainly, I would rather have a Whirlpool compactor, than no compactor. But for convenience, and safety, I find the General Electric design to be far superior, at least for my purposes.
I do give Whirlpool credit for an innovative new appliance. I recall when they introduced the compactor in 1969. It was the first truly new, and original, major applicance in a long, long time.
We just moved to a new construction home recently, without a compactor. I just spotted a GE round bucket compactor on FB Marketplace that I hope to retrieve.