I’ve got this one for almost 4 year and have been happy with it.

ispringwatersystems.com/…/ispring-rcc7p-ak-under-…

I have it hooked up to the fridge and a RO tap by the sink. a couple of things I would tell you is get a bigger tank that what it comes with (2.5 gal). And don’t install it under the sink because it’s hard to get at the filters to change them and the pump can be noisy when refilling the tank.