Ahh, might be interesting to some. Even though those Aspire 26650 4300's looked poorer performing than the iJoy, I had already ordered 2 of them, arrived yesterday. So, charged them up and tested them against other top performing cells, including the EFEST dark purple 4200's, iJoy, LK 5000's, etc. Well, the Aspire beat them all.
However very limited test: DD FET light w/dedomed XM-L4, checked initial amps using the clamp meter. Amps on both Aspire's were higher than all others, but not by much - slightly higher. All cells were 4.19V or 4.20V pretty fresh off the charger.
2 EFEST 4200's and 3 LK's were included in the tests, just to eliminate any single cell issues. I only have one iJoy though.