In the last part of this thread:
https://budgetlightforum.com/t/-/3926?page=1
Willie charged and then discharged 4 Tenergy cells
@ 2.0A and got results in the 2700-2800 range.
The advantage of flat top cells is that they are shorter and that may help in some apps where long cells like the Xtars are too long.
HKJ also tested the Tenergy 2600 cells and got good results:
http://lygte-info.dk/info/Batteries18650-2011%20UK.html