Having done all 3 (granted 1900 PF and Akershus were in 2009)...
1. Akershus
2. Tusker House
15. 1900 PF
Tusker House last year was good, but this year (visited on 9/26) it slid down. More than likely due to timing more than anything, but the buffet didn't seem as special anymore and after 30 minutes past ADR time getting seating, then waiting ~45 more minutes and not visiting with any characters yet (and being told it would be ~20 minutes at the start), we headed out (was me and my Mom, so characters weren't a big draw after that long).
1900 PF I just didn't like. Our experience there was pretty bad. Characters were super rushed, service was only so-so, food selection was pretty skimpy, and food quality was pretty poor. Overall experience was just not really worth it to us (was me, my friend, and her then 2 1/2 yo daughter).
The same group as 1900PF did do Akershus that trip as well, and that was a hit. The food was great, service and interaction were top notch. Of course, this (and the 1900) info is a bit dated, so ymmv.