The slim fit design definitely gives more room between seats (especially important as we have kid #2 on the way!). The straps are easy to adjust to get our child in and out quickly. There are only 2 minor down sides. First, the LATCH system straps take a lot of effort to get tight. We have a Chicco car seat that has a secondary strap for getting a tight fit and I really like that. I wish this seat had a similar design. Second, when rear facing it does not recline back very far so when driving at night if our daughter falls asleep her head can flop forward which looks uncomfortable. Our Chicco reclines back further giving her better head support.