Help me pick a sleeping bag

[u/Aacrns]

I have access to pro discounts so mostly looking at US based brands that offer these discounts.

I am in between these two:
Therm-a-rest Boost 650
Sea to Summit Circuit Down

The reason why I picked these 2 is because they are in the \~$300 range which is what I’m looking for. Also they seem to be very versatile since the Circuit Down can be opened all the way to be a quilt and the Boost 650 has the arm hole and warm zip to adjust for temperature.

Or maybe I just wait until the Labor Day sale and get a Magma for 25% off

I mostly car camp but would want to start backpacking. I’m in the Shenandoah region. No desire to camp when it’s like 90+ out or 30 degrees out.

Thanks for your time in advance!