My father and I went pepper mill shopping one day over at the local Sur La Table. We're very finnicky about our kitchen gear, so we went ahead and sampled about twenty different mills that were on a display, including a few that were in their boxes. I had seen the Magnum before in Alton's shows and books, so I tried it but was very dissapointed. While you do get a good grind volume per twist, and the carrying capacity is absolutely massive, I hate that the adjustor is on the bottom near the grinder itself. Also, the variability in grind size is comparably small.
The Peugot (about 6" tall, all clear) however, had an absolutely incredibly grinding range, to cater to anything from Steak Au Poivre to simply seasoning an omelette. It's also presentable for formal occasions on the table. Only drawback is that the volume is a bit too small for my tastes, but that's nothing I worry about. 20 seconds of refilling labor is worth the amazing fine to coarse range.