We're still a little baffled by the continued rollout of new 4x6-in photo printers from the likes of Epson, HP and Sony. Sure, they're handy, but how about a little more flexibility? Where's the printer that can do both 4x6 and 5x7 shots (we know, it's the letter-size photo-capable printer we already own)? That said, we shouldn't be surprised that Sony has expanded its line of dye-sub 4x6 printers with two new models, the DPP-FP55 and DPP-FP3.5 Both use print packs that include both paper and toner, which Sony says keeps printing costs at about 29 cents per print, and both are PictBridge compatible for direct printing with most recent digicams. The DPP-FP55, which includes a 2-inch LCD for image previews, is expected to roll out next month for $150, while the DPP-FP35, which skips the screen, will go for $100.