Orizaba - high camp and route to summit
At just over 4900m, there are plenty of boulders and quite a few flat pitches at high camp on Orizaba. With prior acclimatisation, plus lightweight down sleeping bag and duvet jacket, this option seemed far more preferable to staying in or near the Piedra Grande Hut. (But we still had a visit from a volcano mouse in the middle of the night!)