Anyone switch car seats yet?

Julie
My lo is now probably close to 20lbs and 28 inches long easily. Starting to run out of room in her infant seat and is fussing more so was curious if anyone has switched to the rear facing seats yet. Are there certain brands that are better than others and what kind do you have and do you like or recommend it? I have been looking at the convertible ones such as graco forever or Chicco next fit but I'm not really sure what features are handy.