Hi chi, welcome

!
I have never tried bloogs maxfusion batts, but use their MF cartos (both blanks and RY4 prefilled) on my kr808d1 batts. People seem to like their bloog batts...the only thing is most of their batts are autos, and I prefer manuals (w/ the push button). They do have one now with a manual button option (the trifecta). That may be a good way to try them out though...it's a combo auto/manual/pass
through batt, sounds interesting.
If you don't have an 808 batt, and want to get one, they are great IMO. If you don't go w/ bloog's...be sure you get one that runs at 3.7v, and not 4.2v like mine (from v2cigs)....b/c 4.2v is too high for the bloog cartos and sometimes makes them burn too fast, since they are designed to work best at 3.6v. BTW, litecigusa cartos (standard resistance) are
excellent and very burn resistant, even on the 4.2v batts.
So long story short, 808 batt + bloog MF or litecigusa cartos make for a great
vape! Some places you can look for inexpensive quality 808d1 kits are vapor4life.com, litecigusa, and even foreign suppliers like heavengifts (if you can wait a few weeks for delivery). Although I enjoy the v2cigs product, they have some major fulfillment/inventory issues, and b/c of that, can't recommend them...just not worth it. Good luck chi!
Just curious,Sweetpuff...r u using the maxfusion cigs too? newbie here looking to buy something...