The pursuit of the ultimate varmint gun is like the pursuit of the ultimate golf club so you don't have to carry that darn bag around.
I'm thinking a minimum of a 17 HMR, 204 Ruger, and a 243 to cover most scenarios.
The 17 HMR created a niche of it's own.
The 204 Ruger nudges the 223 aside a bit in mind for a balanced mid weight performer.
The 243 still king of the hill for when you want to lay the smack down right now on bigger vermin. Anything less is less and anything more too much so.
I'm doubting there is going to be a consensus here.
