Please don't troll this thread. Thinking that the difficulty will raise nonstop with 15% is simply unreal and it's bad intended. There are other threads where you can speculate about the difficulty, but this is not the place and i won't allow it.I will just add that considering that the SP30 will be the most efficient miner starting from August it means that you will be able to mine for a longer period of time than the whole 50000TH/s that is plugged in right now supporting the Bitcoin Network. I don't want to continue this discussion and i will delete all further posts about it. Take it to another thread!
I think it might be helpful if you lay out how you think we should think of difficulty because honestly when I plugged the numbers into the calculator that I use I came to a similar conclusion as JWU42. Pre-order concerns aside that's really the the other thing that would keep me from going with this.
Edit: or even just link to a thread where you think has a good explanation of where the difficulty is headed.