It was still possible to find the 7200s as "new" old stock on ebay a couple of years ago, but these days they are all going to be used. So that's just a crap shoot on their condition. Could be great, could be something else entirely.
Its too bad the manufacturers felt compelled to bring out new models all the time, especially since most of them were just giving higher top speeds, which we generally ignored.
Once optical drives dropped in importance and became commodity products, they slowed down on the yearly new model craze, but by then there were no outstanding drives left, and reliability has not been great.
I'd say for the last four years, I've focused attention on the Blu-ray drives, since Pioneer and LG continue to produce good drives there. But they are also very expensive in comparison. Probably a connection there.
In any case, good luck with your hunt. As Albert and I have pointed out, using your old stock of TY and Verbatim, you should have no issues in getting good burns, even from current burners.