In addition, some flavours of Petguard come in big cans. Ask at pet supply and feed stores that sell the brands of food you like...usually, they'll be able to order big cans for you at discount if you can buy in case lots (usually 12 cans for the larger size); you can either band together with other people who feed the same foods to buy in larger lots at lower prices, or you can find some people who are interested in a few cans here and there and flog your surplus to them, possibly with a small surcharge to cover your costs and inconvenience of initial outlay. It's always cheaper to buy in bulk or case lots if you can. If you want to do a rotation, it may be an issue buying several cases of different flavours/brands, but if you can find others to split or help cover the cost, it can be a really good option. On the plus side, if you can ensure that the expiry dates on the cans are well in the future, it can also mean only having to buy cat food a few times a year (I usually buy every few months or so).
I've actually had better luck with the large cans in terms of batch consistency, moisture, and texture...I have noticed it most markedly with Innova Light (drastic difference), but Wellness also seemed somewhat moister and of more appealing texture in big cans.
I didn't know Nutro came in large cans...I've only seen it in 5.5 oz size locally. Is it the NutroMax line, Natural Choice, or what??