Stefan is trying to make a point that different top cubers like different cubes best. I think his list remains woefully short to sufficiently make that point, thus a bump is in order.
Rowe used a storebought for his 11.70 avg at Cumberland Valley.
We need Harris to come on and make a list of all the cubes he has achieved a sub-11 average with, I think the list is quite long. Just reading the video descriptions from his youtube he has used:
D center with Rubik's DIY pieces
Rubik's DIY centers with Old type A pieces
DianSheng (solving and for time attack)
Joy cube (speed and OH)
Rubik's DIY centers (2006) and store cubies.
Old Type A
Type A with store corners
JSK
Type D
... more probably
Too lazy to go through the rest but you get the idea. I don't think all of these were his favorite, but he was able to get fast enough times with them to be worth posting on youtube.