Right, I'll ask a quick question (just as most of PBI depart for the weekend 
).
Need/want/will have one of these nice SoF Denisons and they come in sizes. And my hight -somewhere over 6 foot- is the the size 7, my chest is the size 6.
My thinking is that the size 7 is the best bet - as long and baggy is better then shart and not so baggy, but I wanted to check on any thoughts before I go and order it.
Yep, go for a 7
they are supposed to be very baggy.
"I think we are in rats' alley - Where the dead men lost their bones."
I gotta 7 and it fit's right - well, baggy but that's what I was going for 
yep, denny sizes were a mistake, they made them massively over sized, by the time the mistake was realised they had made thousands. to late to re make them all. if you look at brit airborne pics, some of them look like circus tents, but once you sinch it in with webbing, it looks fine.