I have one of the first Prusas... and it sucks. It sucked from the very fist day. Faulty components. Material would not stick to the table. Warping. Miserable experience. It has been collecting dust ever since.
I've had two Prusa mk3s for a few years now and they've been excellent. No problems at all, and now Prusa is my default recommendation. I'd run batch jobs on them for days for "customers" without concern.