S.P.
You should look to see which one will fit your daughter best. Does one have a higher weight than the other? I have 2 Britax seats for 2 toddlers and I do really like them. I have a decathlon and a marathon - I like the marathon better. Much easier to snap and adjust the straps and was the less glitzy of the britax for the higher weight limit. The decathlon I have is 2 1/2 years old and had lots of padding and stuff but is hard to buckle and it's really important to buckle any seat correctly. I don't have any eperience with the Truefit, but you can look on the nhtsa website and see their rating and compare the seats.