I agree with CinRell, you'll get conflicting reports since people's experiences vary so much within the huge system of Disney transportation! I had the best transportation at CBR, and I have stayed at all the mods. But that was just me. I think buses are hit and miss with each resort, I have posted my experiences with resort transportion among other issues only to have somebody else post something completely different, often when their stay was the same exact timeframe as mine! Of the mods, only the Port Orleans resorts share buses, and that isn't constant. I would say pick the resort that appeals to you the most with theming and location. I think to and from MK, they are all about even. The Port Orleans resorts are great if you spend a lot of time at DTD since they have the boat, other than that they all feel the same as far as parks are concerned. CSR buses are frequently not crowded since that resort caters to convention guests who often don't go to the parks.