Yep we have a Big Agnes double as well as two colder weather bags that zip together. Different tools for different applications. When it is super cold a single will be much warmer-especially if one of you sleeps hot and the other is always freezing. My hubby gets claustrophobic if he’s too warm at night so on more temperate trips the BA double allows him to unzip his side so he can ventilate without freezing me
We have a Big Agnes one from 15 years ago and we like it! Just make sure your pads will work with the bag. Ours has sleeves for the pads to fit into, but we upgraded our pads and they no longer fit. Might move to a hiking quilt or something in the future.
BF and I sleep in a Big Agnes double bag with a double pad and with a fleece liner tucked inside the bag. We're medium sized people, and it's quite comfortable. Packs down to a somewhat reasonable size and is pretty lightweight. I solo camp a lot and often use the double bag set-up for those trips too just to have more room and to be more comfortable.
If size and weight aren't a concern at all, I agree with looking into two regular rectangular bags that can be zipped together. I have big heavy ones that were sold as a set. I get a lot of use out of that setup too, including using them with another bag tucked inside for cold weather camping and for using on top of the plastic mattresses cabins tend to have - makes for nice and comfy sleeping. The bag is very big and heavy though - takes up quite a bit of vehicle space and not a feasible option for backpacking.
Biggest recommendation I have is to get one rated for colder than you think you'll need. The extra body heat is nice, but my experience is that it doesn't provide quite as much extra warmth camping as you might think.
The older I get the thicker the sleeping pad...
Where I live, I need 3 distinct sleeping bags - warm weather (Big Agnes), shoulder seasons/early winter (Nemo), and extreme winter (Big Agnes - takes up the whole backpack!)
I have an REI half dome tent - big enough for weekend camping, small enough that I could backpack with it if I'm not using a hammock. I also have several Coleman Sun Domes as lenders, and my boys each have a Kelty when they don't hammock.
For front country camping, a nice comfy camp chair is worth its weight... consider a lightweight backpacking chair as an addition or alternative. You can enjoy a lightweight camping chair in camp, but hard to take an XXL rocking camp chair backpacking...
Consider hammocking, too, but that's a whole additional rabbit hole to travel down.
Consistent_Elk9676
