Some more observations about the beta PA. On my unit in order to crank the heat up you roll the thumb-wheel towards the end of the unit where the wall wart power supply plugs in. I think it would make more sense to roll your thumb over the wheel such that your thumb moves toward the probe (ie increase what is going to probe) to increase heat. In any case perhaps the wheel could have arrows like some audio equipment volume thumb-wheels or some marking on the case indicating up or down. Numbers on the wheel could also work, or perhaps a high-contrast dot on the wheel for some rough calibration...
I like the box with the PA better than with the supplied 2400 Mah batteries (I originally picked up some extra 2400 Immedions and Powerex charger; never tried the 2700's). It has more oomph and on the higher settings can be used as a heavier-hitting device, making it competitive with whip vapes for one or two users, IMO.
edit: addl thoughts -
I think the log vapes beat the mflb for purity of taste and inability to scorch or burn. Also for neatness and cleanliness. Somehow or other I spill more herb and abv with the mflb and it is a little less elegant in hand and in its use.
On the other hand the devil in me loves those heavy hits and the way the lift box sneaks up on you. The power to go all the way to scorch has its upside if you like those essences driven off at higher temps. Very good if you need to make it quick. Portability - lift box is it. If you can have only one and portability is a requirement, the lift box is an excellent choice. Mflb is a very innovative vape. Love the PA.