My Local Aldi is further away than the closest Tesco, Sainsburys, Morrisons, and is next to the closest ASDA, yet I will shop in Aldi before I would go to any of the others.
Really depends what your are after I suppose, if you are super particular that your Mars bars and Wotsits must be just so, then yeah dont go to Aldi and buy their versions. My fussy kids don’t like it in Aldi because their stuff is “different”, but if you are buying ingredients to cook with then it is definitely the place to go. All the stuff I buy from there is as good or better than the from the other supermarkets, but costs maybe 65% as much.
My guily pleasures are Toro Loco, Wiennerschnitzel, Taurus pear cider, and that Mather Ross (sp?) chocolate or is that Lidl, not sure? I also enjoy the “lets check out everything they have in the random lucky dip aisle” distraction from the shopping too.
Costco for the meat, Poundland for all the branded crisps and chocolates for the kids packed lunches