Trying a lot more Epcot TS in my next trip as well, but I definitely have a few favorites thus far:
Teppan Edo: Great food and something thats also entertaining. I have eaten here multiple times and have had excellent service. If you do a lot of hibachi at home, it may not be that exciting.
La Hacienda de San Angel: I was fearful from some of the reviews I read, but I went early December 2016 and had a great time! My server Ivonne was wonderful! So friendly, great service, excellent recommendations, offered to take pictures of my group, engaged with us about the CP since she saw our stickers, and we had a prime spot for IllumiNations! My mom also does not like anything spicy (not an allergy, preference), but will dine at places the family wants to try. Ivonne went through different items and made sure her food came out in a way she would enjoy. I got a survey about my service and experience the next day, so I take it Disney may be trying to improve here? Will definitely go again!
Spice Road Table: Super friendly staff, great ambience, and tasty food! My only reservation here for you would be on the DP, the tapas that are delicious may not be the best option.