Typically, premium blades are beam blades, while budget blades are either conventional or hybrid wiper blades.  Beam blades have more even pressure distribution for a smoother, more even wipe. Beam blades do not have exposed metal, so they would not rust as a conventional blade would. Beam blades also do not trap water/ice as conventional blades do. Conventional blades are good for those who are on a tight budget and need a good option at a lower price point.