Actually for printing color dense images 200 DPI will usually suffice -- as a minimun for fine art prints. My prints are as much as 36"x28" in size, and file sizes (never print jpeg for fine art prints!), as much as 300 MByte. The 300 DPI is considered a minumum standard for the desk-top publishing world, as the contrast between (usually) black text and white background requires a higher resolution.  I do get about 300 DPI on smaller print images though.

You can always up-sample images to increase "color resolution" to 300 dpi -- or more, but when printing large size prints the files could easily grow to over 1 GByte!

I purchased the Epson because it is THE fine art printer, and I use specific media printer profiles.  I sold my 2 Honda quads & trailer to fund most of the the printer.  The Epson (actually made by the Seiko factory)  is a fantastic piece of hardware.

For those who want to do their own wide format giclee printing, on a bit of a budget, check out the HP DesignJet 130. It prints to 24" wide, and uses highly fade resistant dye inks.  You can get for a bit less than $1200 (HP has a higher end version with auto cutter, roll feeder & network -- about $1800).