It really depends on what you'd be printing and what your market for customers is to decide on printer and media/subtrates (dye-sub).
A 44" pigment (aqueous) printer is always helpful when going through different size media and have many options to choose from. Bond, coated, matte, satin/luster, gloss, fine art, canvas, vinyl, film, etc.
Dye Sublimation has MANY substrates to use as well. Metal plates is just the start, but you can dye- sub lanyards, scarves, hats, shirt, plaques, keychains, socks and on. You can view the options from ChromaLuxe-
http://chromaluxe.com/ The longevity for most of the products is much longer than aqueous printing. If you do a metal print, it will probably last for many lifetimes (fire retardant, water proof, scratch proof) if the process is done correctly.
Solvent is very similar to Latex as the ink gets "baked" into the media so the longevity is longer than aqueous prints by far, but the selection of media is a bit more limited yet less expensive in the long run. These printers usually get used for doing long term outdoor banners/signage and commercial usage basically.
Hope this helps differentiate the versions a little.
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