I'm a fan of Durst 184 8x10 Enlargers, I set mine up with a 300mm and a AN Glass carrier and I can blow up an entire roll of 35mm or 120 roll film to any size up to 20x24 (My largest tray set up!). For 3 frame by 3 strip (3 frames per strip) in my Beseler 4x5 enlarger, I use a AN 4x5 glass carrier, both set ups work well!