There's no doubt in my mind that on a per start basis, Ryu is one of the better pitchers in the league. His career stats speak for themselves: 2.98 ERA, 3.32 FIP, 3.42 xFIP. That's top notch. Obviously that's discounted to an extent due to him not pitching full seasons, but it's still nearly 750 innings of fantastic results. The big question about him is the health, but it should be encouraging that he came back from so many injuries and posted such a great season. Probably because he doesn't rely on velo to get it done, so you can also argue that he'll age well as a pitcher, barring major injury. 17-20 starts per year of Ryu is still more than worth $20M on a $/WAR basis.
I think the Blue Jays in a vacuum are the best team for him. We can easily afford the $'s he'll likely want. We also have the luxury of having enough AAA pitching depth that him getting injured wouldn't be disastrous, unlike some other teams. The Angels need durability and more than one good pitcher. They're not going to put their eggs in one basket. The Dodgers just don't seem that interested in overpaying him and probably want to set their sights higher. We should be able to beat the goddamn Twins in a bidding war.