I am interested in buying a digital photo frame to display some of my images in my home. For me, the most important criterion is the image quality of the unit. Presently I am leaning toward the 15" frame from either Pix-Star or NixPlay. The resolution & the aspect ratio of both frames are identical. Based upon image quality, I would appreciate any feedback from those of you who might be familiar with either of these frames or if you have an alternative recommendation. Thank you so much.