Galleys, toilets, and other crew amenities assume a large blue water patrol aircraft. But for some nations, a small austere twin, like a King Air 350LR, may the "best" feature. Even for a big and rich nation like USA, a medium turboprop twin may be ideal. Witness the US Coast Guard taking over the C-27Js USAF parked in the desert. And for a few decades a medium twin jet, the S-3 Viking, was the "best" way to go. Again, "best/worst" is totally dependent on the mission and absent a rigorous mission definition, "best/worst" cannot hope to be defined.
Mission (mis)definition is the trap the "F-35 cancelled" thread fell into for the first several years it ran. The airplane's mission was completely misdefined and misunderstood by the countless trashboys in that thread.