Hi, we were in just the same postion a few months ago. We really research and look all around for a new single travel stroller that would be comfortable, but easy on the bus. We looked into Combi's, McClaren (sp?) Graco City light and Peg Pergo's. We looked on line, and then checked them out in person at the right start store, baby depot, babies are us etc.... Stroller4less.com has great prices. Check it out and look for yourself.
We finally decided on a Combi Travel Savey DX. It is normally 199.00, but Strollers4less has it for for 99.00. It has a bar across the childs lap with 2 cup holders on either side that comes off for the child to get in and out themselves. It does not have cup holder for the adult, but has a "Pac" on it that holds water bottles ect... The basket can be difficult to acess, but is ok and the canopy is very good (my 21month old DD say's "hood up." when she wants it up.) It folds up very well, has a carrying strap and is light. You can also strap your bag to it using the velco for the pac. The pac can not hold an open can of pop becuase it will spill.
We decided againt McClaren because no bar or tray for the kid. All the others didn't fold up well enough to lug on the bus. (but they were good for around home.)
We are happy with the stroller, but was a little miffed at stroller4less. It took a number of weeks to reach us because they didn't ship it out right away. Other then that it was great.
Havn't taken it to WDW yet, just 23 days now. Good luck.