Which Maclaren?

[VeroBeachGirl]

I would like a buy a maclaren stroller. I intend to use it exclusively as soon as the baby can sit in it comfortably. My main uses at home would be shopping, strolls around the neighborhood, and running errands. My husband and I do travel a lot, so we would like something easy to travel with. All 3 models seem reasonably priced for the quality, so I'm not that concerned about price differences.
Experienced Mommies, which model do you recommend? What are the pros and cons of each? How many kids can I use this stroller on before I need to replace it?
Thanks in advance!