MalsBrownCoat,
I have no experience with other brands of this type of battery, so, sorry, I can't help you there. I have not bought from the listing, yet, but plan to. I'll let you know my experience when I do order them. However, I did mistakenly buy from eBay some Panasonic 18650B "unprotected" batteries from another seller from Texas and it did say made in Japan. The same seller does sell the
protected version but little more expensive. The unprotected batteries do work fine on the sabers. When I charge them, I use a multipurpose smart charger I use for my heli batteries. The SF ASP Charger works fine, too, but takes longer.
As far as your concerns about battery charge time, it's all about the charger. The charge time you experienced IS NORMAL when using the charger provided by SF. Lithium Ion batteries max safe charge current is equivalent to its capacity (i.e. for the panasonic 18650B, with 3400AH capacity, its at 3400mA). The SF ASP charger's output current is at 300mA, thus slow. Some battery manufacturers say you can charge at 2x to 4x above its capacity, but is not recommended because charging above its capacity shortens its life. Charging lower than its capacity is always safer but slower to get to a full charge.
As mentioned above, I have a smart multipurpose charger (used for my heli batteries) that can charge different types of batteries and where i can set the charge rate. I set it to 3400mA and it charges the battery between 0.5 hrs to 1.5 hrs. When my battery was drained as yours was, it took 2 hrs. When I use the provided SF ASP charger, it reaches full charge from 12 to 36 hrs based on how much it has been drained.
Hope this helps.