Convertible car seat


So I have been thinking about switching my daughter to a convertible car seat. She’s 6 months but I feel she doesn’t like the infant carrier anymore because it’s to small. I feel she would be happier in something with a little more room. Tell me what you have and why you like it! I’m not concerned about space because I have a suv, just don’t know which one to go with because there are so many choices. Also, why did you move your baby to a convertible and why?