Convertible car seat vs. infant car seat

M • 37 y/o. Expecting Baby #1 - May 2019. It’s a girl! 🌺

Has any one used a convertible car seat immediately when baby is born rather than going the route of getting the infant car seat and buying the front facing later?

What was your experience?

I’m looking at buying the Britax Boulevard ClickTight vs. one of the Britax travel systems with an infant carrier.

I’m interested in the advantages and disadvantages of the convertible seat.

Thanks in advance!