I went 2 weeks ago on a Saturday; I've been to Sushi 168 'pre' and 'post' renovation, and over time the quality has substantially diminished. They've become busier, and as a result, they've stopped making (or giving off the appearance that their food is made) to order. I believe that's the biggest mistake a restaurant can make - feed more customers at the expense of quality and freshness.
The food came out quickly...a little too quickly, suggesting that the restaurant simply wants to turn tables as quickly as possible. The hot foods came out cold, and did not look or taste fresh. They should hire more sushi chefs to do things right, and make food to order, rather than churn out a lot of rolls at once, that are left sitting there until they're ordered. It's backwards management and a symptom of greed in my opinion.
You can find better elsewhere, unfortunately Mississauga doesn't have much, so this restaurant has succeeded in attracting customers for the time being. Go elsewhere...the service and quality will be a lot better. It's worth the drive to Toronto or further east for better quality AYCE.