Momo Vegas are a bit too flashy for my liking. I'll chalk one up for the existing wheels to stay (my wife will be happiest if that is the final outcome). I guess since I have never seen another 105 with these rims I haven't really been that confident about their appropriateness.
I thought I would add this link to an earlier thread on what wheels people have on their cars - part of my research base.
What Kinda Wheels Does Your Alfa Have?