about the Solo II - the airpath is not 100% clean. the air gets inside through the 12v charger port, in addition to the inlet air holes. it hits strong tho, on 220c, and feels ok but the taste is not near Tubo/Mi3/Splinter/HI imho
I hope this is not the case with Air Max, get the most new device of Arizer, or get something that is absolutely clean and strong (TM/TP80/FW7/8/Tafee Bowle/etc)