I will be receiving a Baby Wampa and a Toothface (J'Quille) soon, I will let you know what I think of them when they arrive.
I received my "TheNext17" figures a while back but hadn't had time to futz with them much. They are pretty close to Stan Solo figures as far as construction goes, the joints feel good and they are injection molded plastic as opposed to a heavier resin. The design aesthetic is a bit stylized in a way that does its own thing and is not really what I think of when I think of the Kenner style. It works really well for his original creation Baby Wampa, though. Super cute figure.
The big difference to me is the 3 I got ( I picked J'Quille and Baby Wampa but he threw in a Tanus Spijek as a bonus) are all fully painted figures, and that is a huge visual difference to a molded in color figure. It might just be my luck (they are also all fur-covered creatures) but that choice makes them seem more custom and less factory-made, even though I know they were.
I also got my Rebel Fleet Trooper and Sandtrooper from ProCustomFigures. They are much closer to Kenner style in my eyes, though they have their issues. It seems they struggled a little bit with proportions on the RFT. He feels just a hair too big. The limb joints feel a bit iffy and on the loose side, too. Also, the Sandtrooper struggles to balance, probably due to the backpack being grafted straight on to a Kenner Stormtrooper template, and not compensating the leg stance for a new center of gravity. He has to lean forward a bit to stand on his own.