I just picked up an XD50A and am highly impressed with it also. I scan with an MTM and it doesn't compare to the image from the XD50A at all, almost to the point that I may have to "downgrade" to an HD38 or HD19 to scan. Last night I had picked up a target in the treeline at about 120 yards with the MTM. I put the XD50 on it and could tell right away it was a deer, especially when it turned and walked through the trees. It did end up coming out in the field and stood there at 100 yards and put my mind at ease about being able to ID a small deer vs. a coyote with it...it was a no brainer. When looking at it with the MTM it was a definite target, but no ID capability at all. With the scope it was was easily ID'd as a small doe.
I also just hooked up the UNV mini DVR and external battery pack. After a call to Tyler yesterday I got it figured out..except for 2 things I will probably call and bug him about again today. For some reason about 50% of the time I turn on the DVR to record it only shows the vertical axis of the crosshair on the DVR and records it like that. If I turn it off and then turn it on to record again, it will show the whole cross hair...do it again the next time and I get just half again. It's normal in the scope and everything works correctly and records fine, but for some reason it keeps doing that. I have turned off and on both units, unplugged and plugged back in the cables, etc. The other thing I can't figure out is how to get the DVR to quit vibrating when I turn it on with the trigger switch. I turned off the vibe alert on the menu option, but when I turn it on with the trigger switch that little sucker vibrates LOUD. I'll be able to post pics and video soon after I get a few more things ironed out.
Edit: the XD50A does have the PIP function also from a recent update. The only difference I can tell at this point are OLED vs LCD on the XD50 vs. XD50A.