There are two ways to defend a heavily vulched base: Either jump into a GV to defend field and/or town.
Or just up a plane from another base. Vulchers are often suffering from target fixation, if you come in with some alt and speed you can often pick several of them before the horde perceives the threat. That way you can still use your favourite plane. Remember, they are just waiting for you to take of, so you better don't play their game.
However, if you insist on taking off from a capped base, a combination of acceleration and maneuverabilty is usually what you are looking for.
Some recommended planes:
- Hurri IIC. Not fast, but almost immediately combat ready after takeoff. Very maneuverably and 4 hard hitting Hispano's
- Spit V/IX/VIII/XVI. Acceleration, climbrate and maneuverability. I had recently some success with Spit V, (especially vs. CV planes) but you need to have a good aim (little ammo).
- La7. Stay low after takeoff, use your acceleration to get speed and some distance to the field. Then turn around & wreak havoc.
- Il-2. Use this flying tank to shoot vulchers in the face!