Fjn- the George Piros (GP in the deadwax) copies should be pretty good- his remaster of LZ1 from the mid-70's is really excellent. Short of finding a clean, unmolested copy of the 'RL' of II (which is expensive even for VG +or- copies and not easy to find) or the first UK plum (which is nutty money), you should be able to find a nice GP for reasonable money. I haven't listened to a GP of LZII (at least to my knowledge) recently, but in the shoot-outs we did of LZ1, the Monarch pressings were also more alive than others, US or UK. So, one possible short-cut is to find a GP/Monarch of II.
Good luck, and let us know what you find in the bins.
Good luck, and let us know what you find in the bins.