I enjoyed collecting all the boxes, packs, and wrappers mainly with the ANS1 and beyond until there were too many subsets to collect. It was fun trying to gather the different packs from each series that were included in the different boxes (i.e., hobby, store, gravity feeders, blister packs, etc.).
My favorite were all the wax wrappers with the different variations in each 1970's series. However it is hard to know for sure which series had which wrapper at times, similar to knowing which are the later Wonder Bread series stickers verses normal series stickers.