Hi guy...good car you getting, I feel because of their popularity they've been neglected by NON-Alfa lovers who've owned them...
first thing to watch out for is Service History...esp cam belt...not only belts, the whole deal, variators as well, if its not done work this into your deal when you buy one.
New batery - an old one will aparently pop up a lot of error codes.
Some of them are very thirsty when it comes to oil...I get an urge to stop some 147 woman drivers when I see their car smokes like crazy...but then they think I'm a nutcase when I ask them to pull over...their cars will unfortunately not last long.
Get the 2.0, as the 1.6 will only make you want a 2.0 more and more.
I've owned mine for 8 months now and I've only replaced a light bulb, had one normal service, and brake pads...
I also had clutch trouble and I'll have to replace it soon...this weekend in fact - coz I've been driving the car very hard since I got it
Oh, other things to consider...Twin Spark means more spark plugs...normally they get changed at 100 00km's so too the cats as they get clogged up...make sure they're changed mate, if not, work it into the deal again!
Other than that, grip that bulky steering wheel, sit back in that leather...and look around the cabin...what else is so sexy???