We just got a set of the single-compartment version and they are absolutely fantastic. The flat top allows a small post-it note for the date the food was made and lets them be stacked in the fridge.

We got ours at Sam's Club.

Does Sams club have large sets of 1-person lunch sizes? Or can you only get the 38 packs or whatever of different sizes?

I dunno for sure as it was the work of my wife and daughter, but it was a fairly big box of `em. We rarely go out to eat so lots of food goes into them, from olives to butter to thawing blueberries to hummus to leftovers. It looks like they got the 24-piece Glasslock set for $25.