I've test driven both. It really is ganna be personal preference. I'm comming from an 08 Tiburon and E350 4matic sedan. I bought a GT Tiburon because I don't like to sacrifice ride comfort. Yeah the goodies on the SE were worth the money at the time, but what it comes down to is how you plan to drive this thing. Are you ganna take it on the track? Do you just like the occassional sprint and quick cornering? Do you plan to do any mods, or can you even afford it?
Bassically here's how I think of it. I like speed, I like taking sharp corners at high speeds for the thrill. But I could care less about the brakes. 12.6" rotors are fine for basic use so the Brembos while nice, I could care less about. To me it's more of a status symbol. And I personally don't like the look of either OEM stock rims so I wouldn't put that as a deciding factor either because I'll be replacing them. Both cars have a strut brace. The GT has backup sensors, LED side mirrors and a custom brown interior. And is 2,000$ less. But I believe invoice on the GT is lower then a 2,000$ difference in comparison to the Track.
People are over-reacting on the difference in suspensions imho. I've driven both and while the track is stiffer, it's not really by much and if you really want that big of a difference you should be focusing on aftermarket anyways. The track has less body roll but ride comfort is where I really noticed a difference. On a bumpy road every indentation will go up your spine in it. If it's your daily driver I personally think it'd be nuts to go with a track. (Hense the word - track). But if you do plan on seriously taking it to smooth roads to race, sure you can get the track. But in reality if you're ganna be that serious about it... Get a BASE 3.8 instead and just upgrade to better, more efficient after-market parts.
But in reality, I noticed only minor body roll in the GT when cornering hard.