I bought a cheap projector
http://www.amazon.com/ERISAN-Multim...TF8&qid=1434083369&sr=1-19&keywords=projector for $80, its native resolution is 320x480 I think its pretty crappy, but ive been able to transfer a portrait with it. I DONT RECOMMEND THAT ONE
The ones you listed look good, better than the one that I got, check the native resolution, that is the actual pixel amount you will see.
The picos resolution is: 960x540
The second projector is: 800*480
That pico is probably going to be better for image transfers i would think.