I previously asked the same question under the heading "If money were no object..." in this same forum. Refer back to the prior topics and read the replies. The consensus was the 3G Tour Ultras. That being said, I ordered some yesterday from tekneek (he also has a link under the 'for sale' section for dynos). I tried various places on-line, including tekneek, but no one had a size 13 in stock. After some PMs with tekneek, he ordered me a pair and they should be arriving in the next few days.
I have never owned a high-end pair before and am very anxious to try them out.
In doing my research of what to buy, I found some on-line places have various sizes of dynos/3Gs in stock. My understanding is the new ones have a different logo, not that that means anything to me, just an FYI. I did not ask if the ones sold on-line are the new logos or the old.
Hope this helps...