LATCH installation and installation with the vehicle seat belt are both good options as long as you get a good, tight installation. Do not use both the vehicle seat belt and LATCH at the same time. For forward-facing, you should also use the top tether when possible. Consult your product manual to ensure that installation with LATCH is an option based on the child weight limit for LATCH use. You must also check your vehicle manual to confirm appropriate LATCH seating positions.