Seems like everyone pretty much agrees here!
Jenkins had some wonderfull moments on Peter Parker. Personally I loved Maybe Next Year, death in the family, PPSM #25 ("Trick of the Light") is one of the best issues of the decade for me, the stand alone issue with the Vulture (I think it was called Snow Day) was also great, as was PPSM #50, showing how May reacts after learning Peter's secret identity. Amazing issues were also the nuff said, and PPSM #35.
As for the aunt May concept, I really hated that she was back, though I don't think that it diminishes #400. However ASM #35, or whatever issue is with the confrontation is also one of the best spider-man issues.