I personally don't see the savings as being worth it for me to shop at either store. For me to buy FOOD products that are "ultra-generic" I need would to save alot more than what I would be saving by shopping either of those stores. I find most of their prices comparable to on sale "real "brands or at least Kroger brand everyday prices.
I tried Aldi's as well as Sav-a Lot a few times over the years and I have always been disappointed with the savings to quality ratio.
When I make my purchases using the, "on sale, coupon combo tactic " I get a much better quality product and many times at a lower price.
For example, I just went to Kroger and bought a few blocks of Kraft cheese on sale 3 for $5.00, ($1.67 each), threw in a coupon for .75 off of 2 ended up paying $1.30 each. At Aldi's Happy Farms brand in on sale for $1.67.
That is just one example of many. ( I won't bore you with my grocery list
) So in my experience it's not worth it to go to Aldi's or Sav-a Lot.