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If the Hegner you are looking at is a 22" make sure it has the quick tension release lever on the top arm toward the front of the arm. Some older ones did not and you had to turn the tension knob in the back to release and set the tension... That is a long reach and an expensive up grade. The older ones do not have a round insert where the blade goes through the table. It is a replacable insert which is nice. Not a show stopper, there are other ways to have zero clearance, but it is a better set up in my opinion.. Other than that, if it runs good, and everything works....
Hegners take a little getting use to, and parts, should you ever need one, are expensive. I don't think Hegners are for everybody. I love mine, would be my only saw if I could only have one, but not everyone will like them. Bottom feed only, a tool required to change blade.. downers to some...