It would depend on a LOT more data to which the Jazz likely have access but to which I do not. For example, there is the private workout he did with the Jazz FO, there are the results of the combine (the other stuff, not just the physical measurements), there is likely footage from Kanter's games in Europe (or if not footage, then conversations with people who saw the games first hand), there are likely conversations with people who saw Kanter practice with the Kentucky team, perhaps conversations with other NBA teams who have worked out Kanter, and so forth.
If after all that the Jazz decide to pick Kanter at #3, I would be thoroughly on the bandwagon, at least for the time being.
If after all that the Jazz decide they like Knight most, then I am thoroughly in the camp that hopes the Jazz trade down a couple of picks to do so since Knight will likely last until 5 or 6, and acquire some additional assets in the process.
And of course, the Jazz could well decide they like someone else at #3.