The original Trisar was a very good tent for it's time, and mine certainly did good service before I sold it on. However, tent design has moved on, and the materials in the reincarnated Trisar aren't even as good as those in the earlier ones, so I'd not make it one of my top picks nowadays. Decide exactly what you want, at what price point, and decide on that basis, rather than just going on a name.
I was interested to see Decathlon claim that their bivi bag/sleeping bag cover adds 3C to the warmth of the sleeping bag within. I have no idea if this was a guess/rough estimate or based on testing, but it's not a big boost in warmth for the weight involved.
Don't encourage him Trevor; although I suspect he will never contribute to OM again, or even visit the site. I might be doing him a disservice, but he is a fist time poster, and this is one of those threads.
I used to really like Smartwool socks, but stopped buying them a couple of years ago after finding their quality seemed to have deteriorated. They didn't last as long as they had, and sometimes stitching failed. I went over to using Darn Tough socks, which are of excellent quality and feel very nice, but don't fit me quite as well as Smartwool socks used to; nothing major, just a touch of bagginess around the toes I can live with if I have to.
But, I was wondering if anybody has found socks from other brands which offer the quality of the Darn Tough ones, but with a snugger fit.