Best of both worlds and we love splitting between MK resort and Epcot resort.
We start out at the MK resort -- we love Poly and CR and would choose either one. Right now I'm going to be booking a March trip and think I'll go with Poly. That way, I'll plan a dinner at Ohana and we'll do the Spirit of Aloha one night too. We'll plan most time in MK and one day at AK. Other meals at CR and GF.
We like doing the relaxing part last, so we choose BC for that. We love the quiet walks to Epcot, dinners in the countries, relaxing at the BC pool, surrey bike ride around the water, walk to mini golf. To us, that's the best way to end our trip.