Any B5->A5 swappers?

I know I have about a 1 in a million chance of getting an answer to
this, but what the hell. Has anyone out there gone from a B5/B5.5
Passat to an A5 Golf? (GTI in particular?) Whaddaya think? More fun
to drive I'd imagine, but still comfortable enough? Passenger/storage
space - still acceptable? N/V/H? Gas mileage? I've always been kinda
disappointed in the Passat's around-town mileage, does the GTI come
closer to its 24mpg(?) rating? Planning on taking a test drive in the
near future, but that's not the same as owning one for a while. Any
input appreciated.

Looking at the GTI for several reasons:
- Sportier/more fun to drive
- DSG hopefully quicker/smoother/better than Tiptronic
- Better city gas mileage
- Built-in Sirius radio and aux stereo input
- Minor mid-life issues ;-)

Would like 4WD, but don't really want an R32 - too much motor, kinda
front-heavy, expensive. (Audi A3?)

Thanks,
--
Mike S