Smaller meals are useful if:
1) you want to change your name to AeroGirl.
2) you are using them for short trips before your appetite kicks in.
3) You like multi-course meals. (I have used: veg soup for rehydrating, or big deserts, or bread/tortillas to suppliment say chilli... but the size is too small for me.)

Cost or other advantages of freeze dried meals should not be a factor in this thread, but I will say that the number 10 can idea does not work from the convenience/cost standpoint. With the long shelf life, you should buy in bulk or on sale.

The Pro pack packages are not as small as they look. I had trouble fitting them in a bear canister, because they are irregular and do not bend.

Rambler