I am inbetween both of them and have to order with in the next week. The predator isnt sounding to bad with the ability to tune it with your computer and getting tunes from other diablo dealers and that. Sct also lets you get custom tunes via email but i am not sure if you have any control or if its more like a chip and you have to send it back to change anything. The thing i keep on wondering about the diablo is it only lets you change timing by +10%. I know everyone says to put timing at 14 degrees and plus 10 percent wouldnt hit that right?