Not at all all crelant and trunite torches come with a limited lifetime warranty.
Chanches of a cree led going are slim to none
The keepower and xtar 18650 battery's have Panasonic cells, basically a Panasonic battery with a different cover.
If you do decide to get a torch that takes 18650 or the other wee stumpy ones check reviews only of which ones are good if there cheaper than £15 a pair there junk and will last less than ten minutes.
I have 2 set of batterys and after a full charge it will do me 2 nights foxing