Interesting thread.
I always had lower back/hip problems on Thermarests until I switched to their Prolite. I have no problems sleeping on the Prolite. I have too much invested in all my Thermarests to switch to BA at this point in time, but if anything should happen, I'll have to consider the BA.
Do you also have the BA sleeping bags? Any that you'd recommend for biking (summer to 3-season weight, non-down)?
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