u/Dry_Blueberry8932

I'm a cold sleeper trying to build a sleep system for shoulder season:

Option A: Lighter bag + warmer liner

• Cumulus X-Lite 400 customized with 450g of 900FP down (625g total, comfort −3°C)
• Sea to Summit Reactor Extreme liner (390g, claimed +14°C)
• Total: 1015g

Option B: Warmer bag + lighter liner

• WM Versalite (905g, EN comfort −6°C)
• Sea to Summit silk liner (140g, modest warmth boost)
• Total: 1045g

Obviously I'll wear a puffy and other layers inside the bag if needed, but I'd really like to hear what you think about these specific products and about the bag+liner approach in general.

Adding: I have an Exped 6.5 sleeping pad and a Bonfus Middus 1 tent with solid inner.

Are there any fans of alcohol cooking systems out there?

I haven't found many discussions about it. I tested one for a night, but the slightest breath of wind would put it out despite using a windscreen, and it took almost 10 minutes and 25/30 ml of fuel to boil half a liter of water, even with temperatures between 10 and 15 degrees Celsius.

It seems really inefficient to me. Any opinions in favor?