quality is a subjective analysis. Dental quality Doubly so.
some people complain that printed implant models have wiggle in their implants. these are people with no fundamental understanding about cadcam.
and these people are allowed to give Professional opinions.
there are many gauges of quality for a dental model; resolution, feature size, layer thickness, and required supports, are just numbers. there are ways to countermine or work within these parameters and create great stuff. at the same time 'giving zero spacer clearance for implant parts' just makes it ridiculous to fit the part in post-print. as printer axes are x-y PLUS and MINUS some microns naturally it will never fit. things need microns of wiggle to fit in there and reducing it to zero tolerance isnt helping the situation nor yet giving you an accurate demonstration of the printer's ability.
there isnt a Best printer. theres just 'printers that you would have an easy time making items that would be ok 89% of the time'
formlabs is cheap but you get what you pay for. you won't get much for the price of admission there.
but you'll get an education. and that might be worth the investment. because Objet and 3dsystems sure as hell arent going to show you stuff nor help you rip apart their toys. but an open source community just might.
and if you are looking for something more reliable, easier to operate, and more willing to hold your hand so you dont make mistakes - brother please let us know what you find because it simply doesnt exist.