I had a GT diesel which mostly I enjoyed. I'd love a 3.2 GT but have no desire for another diesel. That 4-pot 1.9 sounds really, really crap and don't let anyone kid you an exhaust upgrade sounds better because they just sound even more **** afterwards
. I hated the engine but loved the looks.
I'd take my 159 2.4 over the GT every day. Better interior (The GT dash I mean as it looks crap and cheap, the rest of the interior is pretty good) though I'm not thrilled with the 159 dash but it is better.
For a tractor engine the 5-cylinder is one of the best and actually sounds good when pushed. I don't notice the handing that much (though agree the GT was better) but the ride in the 159 is sooooo much smoother, quieter (oh my ears and aching bum bone in the GT).
The GT I had creaked and groaned (not long after the wishbones were done too!), I did the drop links twice in less than four years too. The ride was too firm but the seats in the GT are the best I've ever sat in which includes three Ferraris' and one with CF sport seats. However the Ferraris and 916 Spider have/had a more comfortable ride than the GT.
I believe if you open your heavy wallet and buy aftermarket suspension bits it greatly improves.
As I said the only GT I would buy is a V6. I could put up with all the [cheese made suspension) issues with that symphony of six in front