I picked one up the other day, but I've only shot a few rounds through it, in my backyard. No serious range time yet. So far, I'm impressed with it. The fit, finish, machining, etc, seem to be top notch. Does anyone own one, and have put some decent rounds through theirs? Anything I should look out for, upgrades??? Thanks.

They're fine.  They are not compact, they are Centurion.  Frame size is same as full, barrel is just a c-hair shorter than full.  True compacts have shorter grip frames and less than 15rd capacity.  You should probably do a lighter hammer spring as it is the easiest and cheapest way to get a better trigger feel.  You can go as low as a 12# Wilson Combat spring or as high as a 17# Wolff spring.  Most people simply choose the Beretta OEM "D" spring.  I have read it is around the 16# mark or so.  It works well.  Brownells and Numrich both sell them.
beretta 350790B

Numrich D Spring

Just ordered a D spring. Did a little reading on them. Pretty much everyone says it's a must have. Thanks.

LNDaddy does your Chiappa use Beretta mags ?

Of course it does

Yes sir. Just bought and used some surplus M9 mags. Worked like a champ.

What vendor is the best place to pick one of these up?

Buds