The perfect buff hunter would have:
- good rate of climb and reasonable high speed to get into position
- heavy armament to ensure quick kills
- a radial engine because you will be shot in the face and a radiator hit ends all your attacks in a few moments
- sturdy airframe and / or good armor
- no perk tag, so you can afford it
There is no ideal plane in the set, but we have a many which come close in some respects.
If you go out on anti buff patrols: 109A8, all P47's, the F4U's (especially the -C). All are durable (radial engines) and have ample firepower. The A8 is maybe the best dedcated bomber killer of them all: Small size, heavy armor and excessive firepower.
If you expect the buffs to be really high (25K and above), go for the Ta-152 or P-47N. The Spit 14 has similar good high altitude eprformance, but it's short legs and somewhat lesser armament make this plane more suitable for intercept missions (and it's perked).
Other interceptors: 109K-4 (no plane climbs faster to altitude and still has enough WEP for combat), G-14 with gondolas.
Typhoons & Tempest have speed & firepower for this job, but they are quite vulnerable, they easily lose their radiator.
Ultimative buff hunter is of course the 262
But of course there are many more capable planes. Actually you can kill buffs in most of the planeset. Setting up your attacks properly is ten times more important than choosing the "best" plane for the job.
