The only wow restaurant in Oakville is Olivers and Mye Japanese. Good is Roccos, rude native and Season's. Fork and Spoon? I guess I should try it again as I have not been impressed - I keep thinking of the authentic pho restaurants that I frequent who do a much better job.
I would add Thyme to the list. My SO and I had a thoroughly enjoyable meal there a few months ago. Another restaurant that we enjoyed in the past is The Twisted Fork near Bronte and Lakeshore. Haven't been there for a few years so cannot speak to current dining experience.