@ adelorenzo, crackin' photos. That first shot would sit well in an add for Chromag.

Sunny South Wales;
Not so sunny summer trip in the French/Swiss Alps;

My brother's gear in front (XTC) and mine in the background (Anthem). This was our gear for a 10day trip in the alps last summer, cycling off-road from Geneva to the world champs in Champery. We made the decision to stay in campsites for most nights just to give us a bit of a base and the option of leaving our gear in the tent if we went for some proper riding during the day. Tent was a Vango Spirit 300 (on the back of the Anthem) which obviously wasn't as neat as a tarp set-up, but anyone who's experience alpine thunderstorms will understand our relief, sleeping in a dry tent when the rain came down.

As stated above, I'm considering investing in a down jacket to keep myself toasty and am unsure what to go for. I'm fairly new to "bikebacking" but have been racing xc for 12 years+ and camping since i was a nipper. I did my first Bivvy and Tarp trip in February in Wales and am keen to do more, but as i live in the UK, i need something that'll keep me warm on cold nights and pack down well into my bag when i'm riding. I don't want to spend too much as realistically i'll only use it 12 times a year if i'm lucky, but at the same time i want something good that will last.
Does anyone here have any recommendations for a budget of no more than £100 ($160)?
I'm tempted with the Trespass Igloo because of the low price of £50, but i don't know how well it preforms. Also considering the Alpkit Filo as i own some of their other stuff and it gets impressive reviews, but it's right at the top of my budget at £95.
Any advice would be greatly appreciated.