None with the Meridian, but a little with the Nimbus Ozone and a lot with the Vapor Trail. Your assessement is dead on: the most comfortable packs I've ever used. I'd expect no less from the Meridian.

Hint: the thick, cushy backpad lets you use a 3/4 length sleeping pad - just put the pack under your legs as a pad extender. If you use a full-length pad now, you can save a little weight with the shorter pad - and if space is at a premium in your shelter (like it is in most solo tents), you've just found a great place to store the pack.