The last few months especially as Claire has gotten increasingly more advanced with her developmental milestones I noticed she wasn't as happy in her infant car seat (Chicco Keyfit 30). We love her infant seat, it fit her when she was a tiny 4lb peanut and has grown with her as she has grown. But even though she is nowhere near the weight limit of her seat and had a couple of inches left height wise, she just didn't like being at such a recline anymore and didn't like not being able to look around and see out. Plus it would be much easier to get her in and out in a convertible seat.
I began my research on convertible car seats. There are so many out there on the market it can be quiet overwhelming. I made a list of requirements that I wanted in a convertible car seat; safe (of course), compact especially front to back space (I drive a Volvo S40 and Christian has a 135i), easy to install with premium LATCH connectors and good height and weight limits.
On my short list for seats to look at once I eliminated what didn't meet my criteria was the Diono Radian RXT, Graco MySize 70/Size4Me 70, First Years True Fit and Britax Roundabout 55. The Radian is a fantastic seat it has very high height and weight limits, has a steel frame and its very compact but because of the high height range the seat is very tall and it is not a user friendly install. I felt it would be to big of a seat for Claire since she is so small so I crossed it off my list. I was really leaning toward the Graco MySize 70 for awhile it also has a very high height and weight limits and it's very easy to install, but the buckle can be a bit tricky and it had big head wings. This seat also seemed like it would swallow Claire. The True Fit was a nice seat but I didn't like that it didn't have much of a base to it, it has such a recline to it I felt it wouldn't be much of a difference when rear facing than Claires infant seat. Finally the Roundabout 55 I was really surprised at just how compact this seat was, installed rear facing I was able to put my front seat back all the way. Its steel reinforced, has great side impact protection without having massive head wings, the quality of the material is amazing, very easy to install, the height and weight limits are good especially with Claire being so small, made in the USA and one of the added perks to this seat is you can buy replacement covers (with Claire's reflux this is a great feature).
After comparing all the pros and cons of each of these seats we decided on the Britax Roundabout 55 and couldn't be happier with our decision. Oh and Claire loves it too! She looks at herself in her car mirror and chats away and I see her looking out the window all the time.