King Solomon 35

We used to have a Big Agnes King Solomon... Worked great. But we have individual top quilts now, and they work better. Either together or separate or as a blanket around camp...

Keep an eye on geartrade.com. My husband and I recently got a synthetic 2 person big Agnes Cabin Creek sleep system for $175! It was in excellent condition but an older model. For more money than your budget, try the down Big Agnes King Solomon (on mega sale like today!) For less money than that one, but more weight, try the synthetic Big Agnes Dream Island. There’s also the Zenbivy beds but they’re pretty expensive and a bit heavy.

Big Agnes king Solomon. Been using one for years. With 2 20” pads it makes a super tight fit. Warm, light and worth every cozy night. Backpacked 30 miles with it no problem.

Since it's currently at full price, the Magma is about $100 more expensive than either of OP's choices. The big difference is that has 800 fill power down, where the other two are 600 and 650 fill power. My daughter recently replaced a synthetic bag she bought while in college with an REI model, and liked their new sizing system. I think she may have bought the REI Magma. I have and like a Big Agnes 650 down bag I've had for years, but at a 15 degrees F rating, it hasn't gotten a lot of use in recent years. I agree with u/TheBimpo that, unless they are trying to put a full set of gear into a pack of 50 liters or less, OP will do fine with either of their choices.

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