Your Epson 725 is a three-in-one machine. To replace it, you want either the Epson XP-860, which only prints up to letter (8.5x11 inch) or A4 size, but has a document feeder for the scanner; or an Epson XP-960, whose scanner only scans single sheets, but which prints up to 11x17 inches or A3 size. Both cost about $200 new from reputable vendors like B&H. Both use 6-ink sets of Claria HD ink (CcMmYK). The Epson ink cartridges for these models are available in regular (T277x20) and extra-large (T277XLx20) versions.
FWIW, Canon makes a product generally similar to the Epson XP-860, the Canon TS9020. It has five inks, not six, dropping the light cyan and light magenta but adding a gray cartridge. Some people think the prints look better; certainly I'd think black-and-white photo prints would look better.