Re: NF F1 3.5-15x VS USO SN-3 3.2-17x TPAL ......
If you're doing real long range I would recommend USO. More options like the internal bubble level (AWESOME FEATURE) and more magnification while still keeping FFP. I haven't got my hands on the new NF BEAST yet, but my impression from the videos is they went too far and over-complicated it. NF is impressive glass though and you really can't go wrong with either, but my preference is still USO.
Also, I've had to use USO customer service in the past and it was top notch. I've never used NF customer service so I can't comment as to their level, but I'm sure it's up there as well. I know... not helping really, lol...
Add:
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JSTARSZ</div><div class="ubbcode-body">I If you can find someone that is close to you that has either both or at least one of them it would give you better idea of which one you like.</div></div>
+1... OP if you put up your location you might be able to find some locals who will let you look through both. Or maybe attend a local match/get-together.