I have both. The Rollei has the quite good zoom lens which makes it east to use in different sized rooms and the trays are readily available and inexpensive so programs may be stored in the trays. The PCP 80 is an incredible machine. Mine has the standard superb lens which means that for a certain screen size you have a fixed distance to contend with. The rarity and expense of the trays pretty much requires that programs be stored elsewhere and only placed in the trays for showing.