Hmmmm I haven't tried a Starfire, I woulda said a really fast Banshee, but you know it's round like every other disc has some similarities to other molds but nothing I've thrown flies like an Avenger, it is an excellent FH disc. An Elite X Avenger is radically different from a Z Avenger, X has way more high speed turn and a softer fade. Z is way more stable, it's a straight line bomber primarily you can S it but it's like you're forcing it. It should fit in your bag between the Surge and a Flick. Nice for overhand shots as well.