That's a tough one.. I'd have to say for luxury definitely the RX8, it was quite an unreliable car though and loved petrol. As with any rotary it used a LOT of oil, which became a bit of a pain topping up all the time. Mine also used to flood quite often, it was extremely difficult to get started again and seemed to occur at the most inopportune times.
Obviously for performance the STI was amazing, but cost quite a few thousand dollars more to buy than any of the others. I unfortunately only owned her for a few months and thought it would be difficult finding something to match her. The interior was quite well set out but very basic.
Overall though and there is no bias, the GT would have to be my favourite and it was the cheaper out of the RX8 and STI to purchase. I haven't driven a standard GT but absolutely love the performance of mine and the GT's interior is so well set out and find the seats amazingly comfy.
