First, I am not a Bloog person, but a mod person. Regardless, at the heart of evey portable PV there is a LiIon or LiPo battery, and all PV's, system or mod, are limited by the current state of battery technology. Battery life is a modertly complex topic, and there are tons of threads on ECF about battery life, but as a rule of thumb, you are limited to around 300 recharge cycles with a hefty variation of several hundred. It makes no difference if it's a system like the Bloog, Joye Mini, Ego, Riva, Volcano, etc. or a VV mod with circuitry like the ProVari, Darwin, Buzz Pro, etc. or a straight up mechanical mod like the Screwdriver, Ikon, Chuck, SB, etc. Sooner or later, your battery will crap out on you.
Your own vaping habits and personality will dictate which PV is best for you with no real right or wrong. The frustration of many in the vaping community is the fact that there is no such thing as plug and play. On analogs, you went to your corner convenience store and purchased a new pack when you ran out. In +4 decades of smoking, I never changed brands; so life, in a certain sense, was far simpler. Lord knows how many iterations of PV's and feed systems I have gone through in almost 19 months of vaping.
If you are happy with your system/supplier and it keeps you off analogs, then you are ahead of the game. We just need to be more aware of the constraints and learn to live with them.
