>>2419079depends on if the mountain weather can shift suddenly. My mountains can have a perfect forecast and then boom, the odd freak sub-freezing night in summer.
and yes, put your money in a good sleeping bag. Insulation is the one place where you can't really skimp, as the cheaper ones degrade and lose loft quickly and weigh too much/ pack too big. Get a good down one and you'll have it for a decade or more with proper care, and combine it with a synthetic outer bag for a god-tier winter system used by many mountaineers and distance trekkers (the outer bag absorbs your body's vapour which condenses inside the synthetic insulation without collapsing the inner down bag).
Tents come and go and you'll probably sell yours and try many different ones before settling on your ideal combination (this is common practice, hence the number of second hand gear swap forums). You won't know til you try. However, a sleeping bag is a buy-once-cry-once affair. There's little difference between the brands, only varying levels of quality and craftsmanship. Oh, and the difference between a quilt or a bag (I prefer a bag for everything but high summer).
If you're serious about the hobby don't waste money on a shit bag, splash out on a quality bag and go cheap everywhere else. It's what all the lifestyle dirtbags who live on catfood and ramen and thrifted clothes and hike half the year will tell you too.
