If you read up on the differences between the 2 youll just have to make up that decision on your own. I got a gt cuz I had the 2.3gt before and I could not part with the xenon
I have the GT. I actually only wanted the sport but they didn't have the color I wanted in a sport, so I got the GT. Now, I wouldn't trade it for anything. It is your choice, but I like my HID's and the leather.
I have a sport and HIDs are not a must have for me and the seats are eh, ok. I have heard more bad things about the auto wipers than positive so the sport was well worth the price difference. But, if you can swing it and those things matter to you then have at it. I would rather have OEM HID than aftermarket.
i went with sport. dont care for leather, aftermarket HID's nowadays are cheap and have decent quality. sound system isnt all that good, but with the money saved from getting the GT you can put together a very nice system. dont care for auto wipers/light adjust/blah blah. but its all about what u fancy.
gt is cool, wipers, seats, u can adjust the level of the headlights, (duno if thats possible on sport) and the lights, its a few minors things. i think its worth it. leather > all