People have asked me for years "if you had to pick one rifle what would it be". That's a dumb question, because I don't have to (even in their context of "bugging out" or whatever).
For me, I'm going to select a licensed FAL or Scar-17 every time...with a 22LR rifle.
For my wife, she'd pick the Scar-16 (with ACOG) or SLR-106FR if no optic was available.
Fortunately for us, we have the freedom to pick basically anything we want (short of currently produced F/A NFA).