Iv drove my first sets of autos here in Switzerland, both new and old, and it didnt matter how much of a sports car they where it still just didnt excite me having my gears changed for me, even retardedly at times, and you see your up too high of a gear for a hill or something, but its just waiting for a gamy downshift when its to late!
I went for a 6 speed first, it wasnt even TT, just a six speed! And for me it was the best manual box i have ever felt, its so heavy, i dont know like a tractor, but when you needed to move fast (for an NA) the whole box just lightened up, gears are silky smooth, so fast!
I could never not have that experience!
Having said that i have never drove an auto Supra!
Unfortunatly for the Autos i personaly have judged them as i judge all autos!
Try both before you buy is all i can say
Good luck with the search!