Which would be the better knife? Or if you think I should add another knife to my decision feel free to chime in.
These knives are as different as night and day.
Like Brian said, the Shun is German profile, the other French/Japanese.
The Migaki is laser thin, the Shun much thicker all around and, of course, lots heavier. Of course you are going to have to be a little more careful with the Migaki.
R2 steel takes a sharper edge and holds it better. No one likes sharpening VG-10 a whole lot, R2 is a hard steel but sharpens easy enough.
As far as chippiness, I'd say it's probably a wash. Both should have a decent board to work off of.
No I'd say the Takamura was hands-down better, but it might not be the knife for everyone. If you read recent posts you'll find lots of recommendations in every price range, and what their particular characteristics are. And I'm afraid I made the same mistake again (geesh), the Shun Premier is also SG-2/R-2 steel, and in which case I'd have to say it would be more chippy than the Takamura.
As far as sharpening, both should have waterstones, they work much better, especially on the harder steels.