Everyone learns differently, and instructors definitely have their preferences. Minnflyer is an instructor and apparently likes using the Tiger as a trainer. The instructors I have worked with all prefer teaching using high wing trainers.

I guess my suggestion would be to talk to the instructor first to see what he is comfortable with.

I've had two PT-60s. One was built with the 'sport' wing. Less dihedral than the 'trainer' wing but still quite a bit. The second was built with zero dihedral.