I'll be doing the same. Not because the M3's were bad, they're great, but an end to end comparison with the powers would be good.
SPB: Not good for commuting? eh? Most of my k's have been commuting and they're great. As for getting them to spin up, i haven't even been able to manage that in the wet...Not that I try.
Definately need to be warm if you want to push though.
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