[JRTJH]

Costco and Sam's Club have a countertop Frigidaire which is a "clone" of the
Igloo model we have. Ours (and those) make about 25 pounds of ice per day and hold it in a "drain bucket" that will contain about 2 pounds of ice. As it melts, the water drains back into the reservoir and is refrozen to make more ice.

So, if you remove each "drain bucket" of new ice as it is dumped from the mold, you can get about 20-25 pounds daily. If you leave it in the "drain bucket" you'll only get a fraction of that.

In an RV, at least in ours, there's precious little counter space, so we don't have room for a larger portable ice maker that could produce more ice, simply because there's no place to put it.

Right now, Sam's has a limited supply and I can't get a reading on availability at Costco. It's the end of the "summer season" so those stores are not resupplying seasonal summer items. In most of the WalMarts, Target and other stores, countertop ice makers are available, but not in great supply.

I'd make an "uneducated guess" that most of the countertop ice makers that are on store shelves are clones of each other and the only significant difference is the access door and control panel. The actual cooling section and ice delivery section are very likely interchangeable. So it's more about price and color than it is about durability or functional improvements.