Oh my, I'm not sure if the fault is in the Consumer Reports article, or if perhaps you didn't understand what you were reading, but pretty much none of this is correct. (As an aside, Consumer Reports should never be trusted for information about car seats. They invariably are wrong.)
1. Car seat manufacturers absolutely DO NOT RECOMMEND always installing with LATCH regardless of the weight of the child. There are clear LATCH limits for EVERY child restraint out there. There are also LATCH limits for every vehicle. ALWAYS defer to the more conservative limit.
2. You're confusing boosters and harnessed seats. SOME boosters allow you to use lower anchors to keep the seat from becoming a projectile. Many do not have the option. When the seat is being used as a booster, LATCH limits don't come into play because the LATCH is only restraining the seat, not the child. The seatbelt restrains the child.
3. Using LATCH in booster mode is not 'safer'.
4. There is no such thing as the 'safest' booster, as there is no legitimate source of rankings.
5. The Parkway SGL is a good booster, provided it fits YOUR child well. You need to check the seatbelt fit when you get it to make sure. THis can change from car to car, so keep that in mind.
6. It's a moot point, but the All in One you had is NOT a good or safe booster. It does not position the belt correctly and should never be used as a booster.
Originally Posted by kimberlynpeterson
I just started reading about this today! I found info on Consumer Reports (though not the whole article because I don't have a membership so can't access the whole thing) that said that car manufacturers give a weight limit, while carseat manufacturers say to install via LATCH at all times, regardless of weight. Consumer Reports stated that even if the LATCH system fails in an accident, it will still provide some resistance, which is ultimately safer for your child. They recommend using LATCH regardless of weight if only so the seat itself does not become a projectile when the child is not in it. That made sense to me! We are in search of the *perfect* booster for an almost 7 y.o. who has outgrown his all-in-one seat that he's used since he was 4 mos old, so I compared the "Best Bet" list from IIHS (http://www.iihs.org/research/topics/boosters/best_bets.aspx) with a list of boosters that use LATCH, and came up with the Britax Parkway SGL as the most affordable and safest one. We'll be purchasing it tomorrow.