Nooooo. I've already bought my pack. Hands over ears now.
Annie
It's like the old song from Crosby, Stills, Nash and Young (1960s vintage) "If you can't be with the one you love...love the one you're with..."
Seriously, if the pack you selected fits you and is comfortable, it is the right pack.
Go with what you know and have, with no regrets. Like new cars, and bargains on the high street, there is always something shinier, flashier, and less expensive coming along. It can get boring after a while.
I know what my correct pack size is. I bought it last year. I wore it on my first Camino and will wear it again this year. Time taught me how to adjust it properly for the optimum fit.
BTW, I use the Osprey Kestrel 48 liter rucksack in the M/L size torso. But because I have longish legs and a shortish torso, the rucksack "frame" is adjusted to it's minimum length. It's all good.
There is no such thing as the best anything. There are solutions that work for you, and that is all that matters.