After much deliberation, I have decided the Driducks will fit my needs best (I'll try a large trash bag as my VBL. Thanks, Barry!)

Question regarding Driducks sizing. In looking more closely at their size chart, looks like I could go with either Med or Large. I'm a lanky 6' and 150 lbs (have lost weight but may gain 5 or so lbs back). I'd typically wear the Driducks over one thin microfleece but might throw it on over a Western Mountaineering down Flash jacket on rare occasions.

Anyone similar to my size who could advise here?

Thanks!