alant82 wrote:It sounds like you're already sorted for summer and winter, so really just needing something to cover spring and autumn. I have a heavy duty Mountain Equipment Dreamcatcher 1000 bag for serious cold winter camping and an old Rab Quantum 400 to cover late spring/summer/early autumn. Earlier this year I bought the Rab Ascent 700 (in a sale for about £110) to fill in the gaps - it's a lot lighter and more compact than my ME Dreamcatcher but still good for probably down to about -3 celcius or so.
I think you may find the 300 ok in summer but not offering enough warmth in spring or into autumn. The 500 sounds like it would probably suit you best - perhaps too hot for fine summer nights but you still have your 1 season bag for that.
The Ascent range of bags are a bit wider and more roomy than some others, which may or may not be an advantage to you. I'm quite slim but like being able to move about a bit within the bag, and don't have any complaints with mine considering the price I paid for it.
Used my Ascent 700 down to minus double figures and it did its job. It's a weird one in the sense it's neither light enough to be a summer bag nor heavy enough to be a true winter bag.
I would like to swap it out for a 500 tbh. I like the cut, but the 700 is overkill most of the time. The 300 would be too cold in spring and autumn for me. If it was just to be used in summer though...