Normally the Ta-152, especially for high alt intercepts. Otherwise, I'll take the 109 G-14 with the dola's and the 20mm(4+ sets) or 30mm(3- sets) hub gun, if it's 17k or less. Wish we had the 109 G-14/AS, then I'd use her more often for higher up. My other options are the 110 and 410, as well as the 109 K4. The only issue I have with the K4 is it's low ammunition load, which is why it's low in my interceptor list. Great climb, good at alt, just bad ammo for me. Taking the G-14 with the 30mm, since I'm sporting the dola's, isn't a huge issue since I will still have ammo with the dola's once the 30 runs dry.