I have an ultra cheapie. However Belomo loupes are the way to go. Made in Eastern Europe (or Russia) I believe. Great quality at good prices (compared to Zeiss, Leica, Schneider, Rodenstock, Nikon, etc), but you dont need a fancy loupe to spy the subpixel structures. I recommend the 12x and 15x Belomo loupes. Bausch & Lomb Hastings 14x loupes are good too. Something higher than 10x and lower than 20x gives you good compromise in magnification and field of view, and edge over 10x without the small glass and rapidly shrinking field of view of 20x and over. The Belomo's are better constructed with better glass than current B&L Hastings loupes, and cheaper to boot.
Samsung 51F8500 Plasma / Vizio M422i LCD / Vizio GV42LF LCD / Vizio VP322 Plasma
Sony S790 BD / Panasonic BDT220 BD / Roku 2 XS & HD-XR
Oppo 983H Anchor Bay / Denon 2200 Silicon Image / Panasonic S97 Faroudja Genesis / Oppo 970HD Mediatek
Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS
Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"