My impression of the X328i was that its a nice ride improvement with a much improved interior over the previous, but:
1. Steering wasn't very snappy- felt somewhat dulled/muted
2. Still not much utility/space for the $ IMO
3. Handling was just OK- actually induced understeer when making a spirited maneuver- quicker than I would have expected. From the seat of my pants the Q5 2.0T (although down on power and a bit of space felt somewhat more buttoned/connected/tossable.
4. Disappointing EPA figures for the 28i
I'm still waiting for my X1 diesel. Hopefully we get it before my kid starts college in about 18 years
If Audi somehow musters up a Q5 or A4 diesel first I'd be tempted to go there so hurry up Motorwerke!