I've been slowly working my way through a series of plant based burgers and sausages. Several of us limit meat intake or are vegetarians so I thought we could share experiences with various products. I'm not 100% sure that the same items are sold on both sides of the pond, but I'll start.
Boca Burger (soy protein concentrate base w/wheat gluten)
original American burger: very good, among some of the better alternative burgers.
Vegan version of burger: not as good as the original American version
Chicken patty: very good, kind of like a "Chickwich" which is a processed disc of chicken breaded and fried like a hockey puck. I like these with salsa on them.
Spicy chicken patty: a bit intense but still flavorful.
Beyond Meat Burger (pea protein base): These are super rich and the closest thing to a regular hamburger that meat alternatives have produced. I used to love one of these on a toasted English muffin with barbeque sauce. I'd cut them in half because they're so dense. Since they decided to substitute avocado oil in the mix, I don't care for them as much since they seem off, like maybe a bit rancid, which is a shame. They are also pretty high in calories so not a great diet choice.
Impossible burger (soy protein concentrate)
These used to be my second favorite, but lately I prefer them after Beyond Meat switched to avocado oil. Nice fried up on a bun with some barbeque sauce.
Quorn (mycoprotein)
regular burgers, no longer sold. These were among the best on the market, based on processed mold proteins. I'd expect to be eating these on an asteroid belt some day. It's not clear why they discontinued these. (Apparently, some people had allergic reactions and, like me, many in the U.S. thought they were derived from mushrooms, but that's not the case).
Chicken cutlets. It was hard for me to choke one of these down, dry and flavorless.
Please add to the list any that you have tried and can recommend (either to buy or to avoid).