I have two '08 drake fins, 38 and 44 cm (iSonic 111) and they have really bad spin out problems. I sanded them with no improvement. I don't know if they have been improved or not. I bought a tectonics tomcat 42 fin and love it.
People that buy iSonics are generally racers and most will buy custom fins to race. The Drake fins don't get used, so why include them with new race boards.
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.