Is there a difference in quality from Millers than Mpix? Don't they ship mainly from the same place and print from the same place?

Not really, no, and no.  They have actual different locations for each, but the quality is pretty darn close overall.

I'm going to chime in but I'm not guaranteing I'm right...

But I was told (on here) that Mpix is WITHIN Miller's - like a small section of the same place.

I HAVE ordered the same pictures, from both places, and have not been able to see a difference personally.  I know the back of the prints IS marked differently (Miller's adds copyright info and your studio name), and you can only get textures, etc at Millers, but overall Mpix can do about the same stuff (and less expensively).  Millers does do free next day shipping (a feature that costs $10 from Mpix).

Personally, I use both.  Just depends on what I want and the quantity of stuff I'm ordering.

I have discovered, though, that I REALLY like the ordering system in Millers better than Mpix, by about 10X - it's just easier!

I use Miller's so I can order their textured prints.  I really like some of the print textures.

While they are divisions of the same. They operate as two separate entities and do not share the same equipment. But they are both cool 

This is my new answer for when people ask this question!

If you'd like any more answers, please email me at matt@mpix.com. The great thing about our customers is their knowledge of how things work, so you may get the same information from them.

Matt, Mpix