I think I remember selling you those 17670s, AWs are great. For the GGTS, my personal choice is the AW 2900 Flat tops It has a discharge of 5+ amps so it should be able to handle w/e you throw at it for a 3.7v config. Although I do use a fuse upgrade just in case. If you use the high drains, you won't need em. I forgot where the charts for all the different 18650 batteries were but the ____Fires and other batteries stored less Mah than stated. Also, you especially wanna be careful caz I remember seeing pictures of some battery companies just recycling older batteries. You'll get quality with AWs.
AW all the way! I use a PILA IBC to charge the batteries. They are safe and I believe the quickest. Best way to preserve batteries is also never let it fully drain or left alone at less than full charge for too long.