So I ended up getting the Resch's Extra Stout on tap and going, after a bit of maturing period.
I think I ended up higher in the FG around 1.013 or 1.014 if I recall. Which even though high actually does have a thinner body than I would expect, probably just perception on my part.
But as far as taste, its a realy easy drinking stout, reminds me a bit of some Guinness Foreign Extra stout minus the tang, which I have heard is from Brett that Guinness mix (some stout fermented with brett?) into it. So if thats where the tang comes from, I'd say it'd land quite close. Can't say I taste much of the dry hops.
Also seems to definitely be even recently that Stouts still had the "tang" to it. Because was talking to my father about it recently and he recalled his grandfather being an avid stout drinker, and he sampled some where he said it really did have a huge amount of tang to it, apparently the old blokes loved it.
The Resch's Old turned out fantastic in the end, a bit sweeter, but not over the top once it had matured a tiny bit. Nice honeyish flavour from the East Kent Goldings. Honestly tasted like a bit of speciality malts were in there, even though mostly just base malt + sugar. Though I was thinking that maybe some of the flavour ends up coming from the Brewers Caramel. Sadly finished the keg last night but will look at the other Old recipes in the near future.