Hmmm, If you where to fly with one of the US carriers you would have to Clear US customs at ORD or ALT and re-check you bags in (Which is Long)
If you where to Go with VS all the Terminal Changes, re-checking in and going through Security at Heathrow is quite a challenge.
At my time a AA when people have come of connecting Oneworld (BA) flights from other terminals and found Heathrow difficult to navigate and missed connections with us at Terminal 3.
However I do like the sound of the Drive from Orlando.
Malaysian28.
(I hope I made Sense)