What lower to put a new LMT upper on?

Quick question. After spending some time in here, I’ve decided to upgrade and get an LMT M4 16" upper and an LMT BCG.
I have three factory complete lowers in my possession to choose from: Bushmaster, Stag, and DPMS. The DPMS is new, the other two have very low round counts. I have two superlite uppers, so really I have one spare complete lower lying around in other words.
All three wear M4 6POS stocks, correctly staked castle nuts, and mil-spec tubes, standard carbine buffers at the moment. Triggers feel about the same on all three to me.
I’m not in the market for a new lower, so, what lower would you put the LMT upper on, and is there any real difference in reliability/parts quality between the three? I’m leaning towards the Stag.

Lowers aren’t really that big of a deal compared to the upper and the BCG. All of thosr three should be fine. I have heard very good things about DPMS lowers, but the Stag is a nice one as well.

Use the Stag.