Thank you very much for some of the interesting links. They are quite helpful for me as I too was planning on getting a computer system for myself in the near future.
I will just link another thread Build your deep learning box: wiki thread which also has a lot of useful stuff.
By the way, what budget are you aiming at? I think according to this http://www.trustedreviews.com/reviews/nvidia-geforce-gtx-1080-ti-performance-and-overclocking-page-2 the GTX 1080ti has quite a few more advantages than 1080 in performance and the extra 150$ seems worth spending (again only when it is restocked). On that note, anyone knows how long does it take to re-stock 1080ti ? I think since the past two weeks it has been out of stock. Any other place where one can get 1080ti?