Efficiency is fine. What's more important is striving for consistency. I recorded everything such that by my 10th all-grain batch I could do it by memory and get close to my expected numbers. I think one would prefer to always have a low efficiency than one jumping around from batch to batch. The unpredictability would be somewhat unnerving, if you are the sort to worry about such things.
Fermenters: Helles, Oktoberfest
Bottled: Old Peculier, Dopplebock, Belgian ale with homemade candi syrup (2 varieties), Berliner weisse
On Deck: Hefeweizen