Getting to MK from the Swan via EPCOT would entail a rather long walk through EPCOT and a transfer once the monorail gets to the TTC, and most importantly, would require park hopper tickets since you would need admission to both EPCOT and MK on the same day. The bus to MK would be faster and much more convenient IMO.If cost is no issue then hands down the Swan will be a bit more convenient. With it being a short walk to Epcot it's pretty convenient. As far as getting to MK you could go from Epcot on the Monorail or take the bus directly, neither would be too bad. Anytime you have a walk to one park the convenience of that beats out another where you have to bus to ever park.