[Rygar]

50-51ish to my shame was KC (grouped until I got my pipe drop then GTFO)
51-55 The Hole (grouping)
55-56 HS (3 or 4-man)
56 SolB Bats n Bugs (solo, only did 1.5 yellows until I hit 57)
57-60 The Hole (solo)

I never bothered with Seb since it seems so crowded, although I grouped there a ton on live.

I have to say I really enjoyed HS, having a smaller group and often times no cleric added an element of danger to otherwise comfortable grouping in previous levels. I'd often pull without having chanter lull the rooms, so was living on the edge a lot of times due to absorbing 3-4 HTs and occasional caster mixed in. Funny thing is, I don't think I ever died there. I technically fell down a carpet once and since we had a cleric I died so I could get /corpsed up, but I could have easily worked my way back to basement teleporter if I was patient. Just goes to show you are at your best when your safety net is gone.

The Hole was a zone always close to my heart, fell in love with it on live and became famous for my Hole groups I'd put together each day and take people to obscure camps they never realized existed (too often people just do entrance or the first drop off... such a waste). I have had much the same experience on p99, and feel I am still learning little tricks here and there to the zone.