Okay, I've officially done my first soft reset for Suicune! Just to be safe, I will be catching Suicune and purifying it with the Time Flute so that I can see its nature. If it has a Bold or Calm nature with good IVs(HP, Def, and maybe SDef must be above 20) then I'll keep it instead of getting a shiny Suicune. I've only done one, but I really want to soft reset for Latias on Ruby now, so I'll resume SRing for Suicune tomorrow.
Edit: Oh, and to keep myself from getting TOO bored, I'll be SRing for shiny Latias while I do Suicune. Heh, SRing for two dream shinies at a time... could life get much better? ^^
Well, other than actually getting them super-quickly of course...