I'm looking to get a tandem stroller to accommodate my son (24 months in Aug.) and baby #2 (also due in Aug.). I'm just starting my research, and would like input on the pros and cons of Sit n' Stand vs. the Joovy Caboose. They look almost the same, what are the differences? Do people prefer one to the other? I also like the E3, but does it accept an infant car seat - also I don't know that I'm convinced I want to spend the extra money? Are there other options to consider?