Keye Luke was one of my favorite CC sons. The chemistry he and Warner Oland had was great. It's a very hard decision because those are very good choices. I think the father-son chemistry that Charlie Chan and Lee had in Charlie Chan at the Olympics was great plus the movie has a lot of historical elements to it. It was a pleasant surprise when I watched The Phantom of Chinatown for the first time and saw Keye Luke in it.
I wish I could give a vote in one way or the other, but I think it I'll leave it up to you all to decide in the end. Either way, it won't be disappointing.
As for Mr. Wong, I had a gift card for amazon and there was a little bit left on it. Unsure what to do, I decided to go through some of the cheap dvds they had and found a Mr. Wong mysteries DVD collection (well it only had four or so movies on it) for very cheap (maybe like $5 or something around that much). I never saw Mr. Wong prior to that, but I enjoyed the movies and now want to get a better collection because some of the movies apparently weren't on the dvd.
I've got The Green Hornet (1940) and The Green Hornet Strikes Again (1941) at my website at http://tommenterprises.tripod.com/id268.html and all the James Lee Wongs at http://tommenterprises.tripod.com/id264.html.
(And a bunch of the English Sherlock Holmes TV series at http://tommenterprises.tripod.com/id265.html.)
I'll bring cake and ice cream if we're celebrating Keye Luke's birthday the Monday before. I'm bound to have lots left over from the fifth!