hello Woody,
I'd opt for the Snugpak. If you read the small print of the Highlander bag *British style (not actual issue) that doesn't say if it is to a specific military or NATO standard with stock number. The British Arctic bag used grade hmmm.. buying such it is better to view first before parting with your money. If it's returnable, I'd go ahead order & view it, if unsatisfied then return it (is it worth it)?? googlefu if your unsure how to care for your sleeping bag, washing, drying & airing whilst using it.. Ehecatl I agree with you I'm taking into consideration that it's Woody Jnr. humpin' the load & the arctic bag could be the straw that broke the camels back.. just sayin'. The Ridgeway (Britain's oldest road) I know where you are I've been down that way sometime ago RAF High Wycombe & Daws Hill to name but a few.. Cold War years.
Regards
David