I really like my toaster..but here is what I’ve noticed.  If you use a more textured bread or English muffin the crumbs don’t all fall into the crumb tray. Some get caught in the toast channel itself.  It also appears that all the heating element wires don’t turn red, don’t know if that make the toast uneveningly toasted. I am a neat person so I get the crumbs out when I use those types of breads so crumbs don’t buildup and I Just keep doing +30 seconds till I get the amount of toastyness I want.