From what I understand 5 IV's and higher are very hard to breed for and the statistics from what I read scared me so bad that I wont try unless I have an action replay that allows me to hatch eggs on auto mode lol. Now where going to do a run through on getting these IV's next. Im going to PM you how I do it unstead of sending some stupid guide.
Sure ide love to be of some help. First I have a flawless ditto cloned but its on my 4th gen game so I need to get a couple of copies on my 5th gen and ill get you one. Ok, the first thing is that you only need power items to contract one IV as the statistics for getting a IV with a power item are very consentraited meaning that if only focuses on that one stat so attaching 2 power items some how cancels the statistics out. How Idk? Now that we got that out of the way lets look at a couple of things about diffrent pokemon. You have sweepers/mixed sweepers and then you have walls/tanks/sponges. For me I make things easy with sweepers by breeding with 2 to 3 IV's as all they will be doing is revenge killing so all 4 IV's are useless unless you find differenly my opinon. As far as mixed sweepers I usally do 3 (att/spa/speed). When it comes to walls/sponges/tanks I breed up to 4 IV's.
O, I do need to note that I don't have a batch of max IV Ditto's. Every breeding guide I read just assumes you somehow pulled a batch of max IV Ditto's out of thin air to ease breeding projects. So sadly, that's a no-no for me.
O? I know it's possible, by using power items, to at least have two 31's, but how can I get 4? What I do at the moment, is just upgrading parents all the time (Right now, I have two Darumaku with both 2 31 IV's, and whenever I get a new third 31, I just replace the new guy with one of the previous parents to hopefully see that new 31 on more pokemon), but this doesn't guarantee me that I actually do get the additional 31s, other than the two 31s I get from using power items (and even that isn't guaranteed).
If I'm missing something, I'd love to know what to do better, because I really do want to work on getting better IV's.