Bah, I seem to have good luck getting up to 40, but after that something always seems to mess up... >_<
Anyways, I had to try four times, but I finally was able to catch a few shinies without my game messing up, but then I screwed up by forgetting where the patches were and choosing the wrong direction... I have a total of 5 Shiny Magnemite so far, but ironically enough, the first one I caught, which wasn't a shiny, seems to be the best one... Here's the stats of the best three:
#1 - Shiny, Timid
26/x/4/7-9/12/27
Good Speed and HP, but everything else sucks... :( Still, the most important stat IS Speed...
#2 - Shiny, Bold
30/x/28/16/2/19
Speed is a bit meh, especially with a Bold nature,so I probably won't be trapping any Metagross soon... but it has great HP and DEF, and since most Steels that Magnezone will be trapping use physical attacks, this could potentially be worth using.
#3 - Non-shiny, Timid
3/x/2/31/19/27
Perfect SAtk, woo! Unfortunately, this thing can't take a hit at all... The Speed is the same as my Shiny Timid one, though, so the two most important stats are looking good.
The two shinies were caught in Luxury Balls, the non-shiny was caught in a Dusk Ball (I didn't think it'd end up being so good...). I'm probably going to try again, but I figured I'd see what people though of my small pull.