I just got my vamo and protank today and tried it out with arnold palmer from mbv. I first i was a little dissapointed cause it seem just as harsh as the gas station ones ive used but a few puffs later and it was working like a champ. The ifest 1865 was a little tight going in the first time. Very happy with it. If your looking to buy a pv i would recomend the vamo. I got my from exhale in 2 days for like 69 bucks with batt and charger. ss model. If your going to buy a pv i would go for the good one right off the bat. I glad i did.