Welcome to FT!
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I have not been to MEM recently, but it is OK .
Definitely the SFO club is much better than the ATL ones and much less crowded. The main problem with SFO is that it is outside security!
The DCA one is small and slightly old but has a few PCs for work and email.
The MSP one in C is fine, but somewhat formal.
The MSP near F & G is less formal but much more crowded.
Some of the ATL ones are not much bigger than a shoebox, esp in B.
The DEN one is great from my view.

I never understand why a few locations have PCs and many do not.