
Canon
SELPHY CP1500
Simple, archival dye-sub prints; portability and costs divide users.

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I have both. I stopped using Instax because of the cost of the film; CP1500 costs $33 for 108 postcard-sized sheets. What I usually do, if I want smaller photos, is print 2 or 4 per sheet, and they end up being a similar size to Instax Mini or Wide for 10% of the price. There's a Canon Selphy QX20 that prints Instax-sized photos, but the paper costs much more. I don't recommend Kodak ZINK or 3-step film; I've tried them, and they're terrible.
I’ve got both the cp1500 and the qx20. The latter went to Canada with me from the uk and worked really well. The cp1500 prints are better but it’s a bulky beast to be lugging around on airports etc. mine came in my hand luggage, on the Canadian and was great to write and capture photographs as the trip happened.
I’ve got both - I took the qx20 on a big trip to Canada this year and printed off photos as I went for a journal, mostly three to a sticker sheet so pretty small, but I knew I wouldn’t have time to do it when I got home. The photos are ok but not as good as the 1500. For portability it’s pretty good though.
Look at dye sublimation instead of zink printers! The quality will be better. I have a canon SELPHY Qx20 which I love but there’s also Polaroid hi print and Kodak mini 3 retro. The cartridges are super easy to use and if you’re worried about the ink making a mess or something it’s not like that at all.
I have the Canon Zoemini, the ZINK paper is super convenient for traveling plus the printer is tiny! Canon CP 1500 offers the pest print quality but it’s size make it better suited for desk use Canon QX20 is the good middle ground.
Canon Selphy Square Qx20!! It's amazing. I love that the prints are dye sublimation so won't fade (archival quality, guaranteed for 100 years) and the sticker backing is so handy and the photos are nice and thin. I got mine at the end of last year for Christmas and it hasn't missed a beat! I mostly use it for photos in my 5 year diary so it was especially important I chose a printer with photos that won't fade 😊 Also the app has always worked well and I like I can collage up to 8 photos per piece of paper, which saves money on the prints. Usually I'll do 6 pics per paper & I cut them up.
I second the Canon qx20 (or qx10 if you just want a 2x3" print). I don't like the HP sprocket 200 or Canon ivy 2... they seem to overly sharpen and I don't like how they reproduce darker skin tones.

Canon
SELPHY CP1500
Simple, archival dye-sub prints; portability and costs divide users.

Epson
EcoTank Photo ET-8550 All-in-One Wide-format Supertank Printer
Low-cost tank prints large, but suffers paper jams, color issues.
Canon
PIXMA G660 MegaTank
6-color MegaTank offers quality, low cost; but slow, poor display.

Canon
SELPHY QX20
Portable dye-sub sticker printer; but no battery, paper scarce.
Canon
PIXMA PRO-200
Pro large-format quality; but high ink and replacement costs.