There’s no magic ingredients inside them other than a heating element – the only variable is how hot the elements get
Not sure thats correct, but then I havent looked at the wattage of a particular toaster and compared it with another(I imagine though they are pretty similar). But time in the toaster before it automatically pops it up is just that. The little dial increases or decreases the time its spent cooking before it stops.
Im sure there will be other facets to the equation, insulation for example, as in how hot it gets inside, distance from the rack that holds the bread in relation to the element.
At my mates place yonks ago, we used to use a cleverly bent fork to hang the bread in front of his gas fire because he didnt have a toaster, but I suppose none of us were toast connoisseurs, and warm and crispy bread is warm and crispy bread.
.
EDIT:
Dualit toaster – £78 1100w
Asda basic toaster – £13.50 1000w