I was debating on Moai or Photon and I found this on the blog this morning. Sorry itis long, but it is a good read. Photon wins.
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"I looked at both machines carefully. Cost was not a real big factor because I was buying it for work. Operating costs and maintenance were actually more of a concern.
Technically, the Moai should not be able to print higher detail because it has a 70 micron laser spot size vs. a 47 micron pixel size for the Photon. However, the Moai laser spot moves in a smooth line and therefore does not produce stair-stepping n the X-Y plane. In practice, I think it is probably hard to see the difference in quality unless you look under a magnifier.
The most critical difference between the two is probably the vat design. The Moai uses an acrylic vat with a coating of PDMS on the bottom. The Photon uses a piece of FEP film that is stretched over the vat frame like a drumhead. The FEP film is less expensive to replace than replacing the entire vat of the Moai. (although some people are re-coating the acrylic vats themselves with success). Replacing the FEP film is easier than recoating a vat. Most people just buy new vats for $40 to $50 each. The replacement film for the Photon cost just a few dollars. Although the FEP film seems like it would be a lot more fragile, it can actually last quite awhile if you treat it carefully.
Resin costs should really be quite similar. Both use 405nm resin, although the Photon needs a quick curing resin. The AnyCubic resin for the Photon is now available, but it's more expensive than other alternatives that work just about as well. Wanhoa D7 resin can be used, as well as Monocure 3D rapid. Both are around $70 to $90 per liter. I think resin costs for the Moai are similar."
https://www.3dhubs.com/…/th…/peopoly-moai-or-anycubic-photon
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