I think Mike S. pretty much said it perfectly. This is the Italian version of Mandarin, a feed bag place where you can take out-of-town relatives who don't like all that "weird Chinaman stuff" but want to add another roll of fat by their 40th.
Buffets are generally not noted for quality and seek to (or should seek to) dazzle us with the quantity and variety. Vinnie's hits that marker nicely. As well, an Italian buffet restaurant is itself a fairly novel concept in the Toronto area and gains a point for that. The decor as Mike has well noted is quite attractive and I liked the Italian street front concept.
I thought the high point was the dessert bar. While the hot buffet items were quite decent the cakes, tortes, and pies were exceptional. They also had a dessert waffle bar and an ice cream bar. As is typical with these buffet ice cream bars, the ice cream is kept at about -70c making it nearly impossible to hack out more than 2 small scoops of ice cream before the 10 year old waiting behind you calls over his tattooed father. They have banana flavored ice cream which was a bit different.
The restaurant is in the strip mall complex on the north side of the Vaughn MIlls parking lot. Parking is plentiful. And there's lots to do in the area. There's the mall, Wonderland, Ikea, the Woodbridge Colossus, the smallish big box mall that rings the Colossus... This place one could do worse as a capper on a Saturday of shopping.