The real conundrum is when you later need to maximize a print and get at detail that was left on the table with prosumer flatbeds. When you've got the need to go big, it's not only time for a PMT re-scan, but factor in the time-sink of redoing all the Photoshop post... And perhaps the need to closely approximate what the existing color balance on smaller prints, which may not be possible. At some point, PMT drum scanners start to look very attractive versus 3 distinct CCD scanners and workflows.