Hoi you missus. Tesco Chipz are actually a very, very good alternative to the fake-crisps that are Pringles! Though Pringles are neither crisp nor cake, the Tesco alternative offers a far more vinegar-centric Salt and Vinegar, less greasy alternative to the Kelloggs/Unilever variant!
That said, Tesco are unable to follow the Unilever "secret technique"; the "eighth Pringle" technique. Every eighth Unilever-Kelloggs Pringle is dusted with double the amount of flavour dust that the others have, resulting in a more addictive, flavourful bite. This is the secret to why you seem to always get bored of Pringles, but continue to eat them.
Tesco, sadly, do not have the legality to implement this as it is actually a patented technique!! Zero jokes!