Looking for Li battery advice

A little background, last week I purchased a Cyclone C88, it hasn’t arrived yet, but i plan on using it with NiMH AA batteries for the time being.
However in the near future i would like to use either an 18650 or 26650 battery that it can handle.
I like quality, but i am also relatively poor, what model and where does the hive mind suggest for good quality at the lowest price.

18650: Xtar 2600mAh, from BLF group buy.
26650: TF 5000mAh from Manafont.

Also I’m looking for charger advice here