British Red looks like you've been talking out of your bottom?!?!
I bought a Nanok 0 from Outdoorcode a while back and it has done sterling service since then including many stints in below zero temperatures down in Brecon and the Scottish highlands, however, please note that whilst I generally sleep hot I often find that my legs get quite cold in the bag. It's quite bizarre really ...... my feet don't get cold it’s just the upper thighs and it doesn't seem to matter if the temp is -2 or +5 my thighs still get cold?!?! Obviously at -2 they are colder than at +5 ........ it's not uncomfortable just a little irritating, enough for me to wake up register that my legs are cold and then struggle a little at getting back to sleep again (all of about 2 mins struggling!).
I suspect that this has something to do with the size of the bag ..... as its designed to fit around the -10 it makes for a huge bag! I'm a 6ft, 14stone and wide shouldered individual and the 0 degree bag is more than enough to accommodate me ..... so much so that I think my body is struggling to heat up the dead space around the baggy leg area, hence the chill.
In light of this I ordered a couple (one for me and one for a friend) of -10s from Genuine Army Surplus late on Monday and they arrived at the crack of dawn on Wednesday (basically next day delivery) ...... outstanding service. And for around £42.50 per bag (£40 per bag and as I bought 2 bags the £5.95 delivery was split)!! Great value!
Of course as soon as they arrived it was spread out on the living room floor and I was in it before Ray Mears could say “No more Witchetty grubs for me, I’m stuffed”! The -10 is a much more "snug" fit with very little dead space ..... seems to be the ideal fit for me. I'm giving it a whirl this weekend so will put it through its paces. If you're going to get just one bag then I'd suggest the -10 rather than the 0. I don't regret buying the 0 as I'm sure it will do me just fine on Scottish summer days and combined with the -10 I now have sleeping system that will take me from 0 down to -20 ...... more than enough for this country! However, I suspect I'll be using the -10 a lot more than the 0.
P.S. I also had fantastic service form Andy at Outdoorcode who supplied the 0 degree bag.