The 8300 will take 8x10, but borderless printing on cut sheets is disabled. The smallest cut sheet I print is 8.5x11, and I find the largest 3:2 document dimension on 8.5x11 to be a tad over 9 inches when using the Canon print plugin.
As for detail, the 8300 and 6300 will exceed smaller printers because of the larger gamut with 12 ink cartridges. The 6300 utilizes a top feeder for cut sheets as where the 8300 must be front fed, both one sheet at a time. As to borderless printing defaults on the 6300, others will need to chime in, but much of this information can be readily had at Canon's website. I have read previous posters alluding to problems with certain brands of paper (Epson Exhibition Fibre) showing scratches when fed as cut sheets into the 8300. My overall opinion of the 8300 (I used the 6100 before the 8300) regarding media rolls verses cut sheets is that rolls are more user friendly, and this is why those not content to use primarily rolled paper may choose to have a second smaller printer for cut sheets, or choose the ironically more expensive 6300 instead (I understand media scratches not to be a problem with cut sheets on the 6300).
Unlike recreational vehicles, larger printers are not, should we say, ink hogs. They do not consume more ink than smaller printers, but they will require more ink when they are initially primed at first startup. Larger printers do require larger cartridges and in the long run, this will save money as the cost of the ink decreases with larger ink cartridges. The 8300 will display milliliters of total ink and individual inks consumed for any given print job. I have found a 20x30 print takes around 4.5 ml total ink volume. I don't have numbers on other printers, but the consensus is the x300 and x100 Canon printers waste the least ink of all makers.
