The Finch gives you more floor space inside, plus the added space of the second bed end for jackets, bags, and all the paraphernalia we seem to take with us when travelling.
It’s a better concept with kids of course, but like you, the kids have gone now and we only need to cater for the two of us..
The Penguin has the bed taking up floor space inside and no ‘extensions’ to add to the roominess inside.
However..
The Penguin is so much easier to set up - just wind it up - no bed ends to extend, fit props, set up the canvas over each end, etc..
We have travelled - moving every day - with a Finch, and the set up and pack up every day becomes wearing (or maybe I'm just getting lazy as I get older?)
If your travelling involves stopping in one place for a few days or more, I'd suggest the Finch, or a wind up of the same concept as the Finch.
If you normally pack up and move every day, the Penguin (concept) is a better choice.
Better still..
Compare a Goldstream Crown to the Jayco Penguin.
The Crown is the same concept as a Penguin, but slightly larger (about half a metre longer)
It has a queen size bed, compared to a short double in the Penguin (1500 wide vs 1300 wide, plus extra length)
The table is larger and the seats are more comfortable..
There’s a useful shelf and pantry storage area behind the seat, adjacent to the doorway.
The Penguin has a drop down robe, but you lose seat space. I’d rather do without the robe.
Build quality is often a matter of personal opinion, but I feel the Goldstream wins in that respect.
The downside is the Crown is more expensive than the Penguin, but I’d spend the extra for the better facilities.
Jim