Well, if you're just doing a basic test, consider also 499 (Ampex or Quantegy), or 406 (Quantegy, or Ampex after 1995 only). The machine won't be biased for that format so if you're going to adjust levels etc, probably better to get some RMGI SM911 (or is it Pyral these days?) or whatever you're intending to use for real work. But if you're just doing a basic function test and aren't too worried about the playback level being wrong vs recording, any of those would do the trick.