I like the IL2 for hunting most GVs... Ditto on the comments above about winging and bait-n-switch... That tactic is best. Pass directly over the OSTI (out of his range), the invert and do 70 or 80 degree dive releasing your eggs or rockets on the way down.
As for the best plane for the job? I like the IL2. I use 1 IL2 rocket only, 2 for allied planes, LWs the A2A will work but the effective range is weird - haven't completely figured it yet. My favorite thing about the IL2 is that her 23mm cannon shreds armor better than the rest... Sure the others will kill trends, guns, and engines..., but the IL2 will get explosions from the side or rear most passes. And she will usually take 2 or 3 37mm hits before losing critical parts... It's one tough bird.
Try it, you'll like it