Car seats

Hi moms and dads need ur advice on baby car seats.. from newborn onwards.. probably a seat that can last till my baby grows.. nw on the market they are plenty of models and brands.. can this seat be placed at the centre by using the lap belt or placed beside the door? I prefer the seat that has isofix and 360 degree rotatable.. but some models have addition support leg or still have to bucke up with the seatbelt even though its isofix.. I'm trying to look out for a car seat for my newborn..