So my girlfriend reminded me that I have a gift card to Sears from last Xmas and they expire in a year so I needed to spend it. Sidenote-Who else knew those things expired? I didnt.. Anyway, I was browsing Sears online and found a few magnifiers that I hadn't heard of except one. There's One 3x from UTG, that's the one I've heard of, than there's a few from Sightmark, Sellmark, and Firefield. I know these aren't top of the line or anything, but are they worth having for a gift card that would otherwise just expire? Anyone have any experience with any of these? And There's a few 5 and 7x's on there. Would my Vortex Strikefire work very well with that much magnification or should I stick down with 3?