Kalel, sarcasm is all very well :-)
But it's well known that the engines in the 159/Brera are not the greatest works of Italian engineering (in fact they are not Italian at all). The 2.0TS is a classic and if you have ever driven one, I think you would agree that it sounds fantastic, is very smooth and a lot of fun to drive. The 147 (in original form) IS a very good looking car. The 147 GTA still sends shivers down my spine, I wish I had the guts to buy one s/h... I was either perusing CAR MAGAZINE or EVO MAG yesterday (can't remember which one )and they said about the 147 "the interior could still teach the Germans a thing or two about design" and I quite agree.
If you were to forget about the age of the car, I think that the 147 is probably one of the best cars Alfa make currently...
There was a scathing editorial in the same magazine about the current state of the Alfa line-up. Made sense to me... It's really sad that they have allowed this to happen to such a fantastic company.
Regarding the current powerplants, the 159/Brera have GM blocks. That's the non-Italian part. The cylinder head, pistons, induction and exhaust are all from Alfa and assembled in Italy.
Looks are always going to be subjective but its fair to say my former 156 received no where near the attention as the Brera. The 147 is a nice shape. Stunning? Not so sure.
As a former owner of a 156 JTS 2.0 and having driven a 147 twinspark, the 2 litre Alfa engines have a great rorty sound and are lovely to drive. But not in the same league as the 3.2 in terms of power delivery, handling (Q4) and smoothness. Miles and miles apart actually.
Never driven the 2.4 Brera Diesel but I understand the unit has great torque numbers and many owners on here seem to be happy with it. You may not be. Fair enough.
Anyway all good. If you'd rathar drive a 147 than your current Alfa, all power to you.
I just share a different point of view.