I'm quite skinny. Measured 36 /37 in chest 28/30 in waist. I was reading reviews on dogfunk and someone was saying they run on the big side. Can you confirm? What size are you and how your medium flex force fits you? Are you upgrading to new year model?
I measure 35-36 chest, 29/30 waist. I agree that the Medium Flex force pro runs large it fits me baggy like a loose jacket, but I like that as it doesn't restrict my movement when I twist my body for spins. It actually comes with compression straps to snug it up for thinner bodies, but I don't use them (look at the photos I posted to see).
Yes, I upgraded to the d3o Flex force X, which I also like a lot.