I don't believe the problem is with the pv. I have the 901 and the ego and the throat hit is about the same. I love the ego though because I've had less problems with the atomizer. The juice makes a huge difference on throat hit though. I've ordered from 5 different venders and many different flavors. I like a little throat hit so I've been sticking to 24mg. I do all my ordering from Tasty Vapor because of all the different flavors and the price is good. I would suggest dropping to 12mg to 18mg and stick with sweeter flavors. tobacco menthol and cinnamon with produce higher throat hit and more fruity or chocolate flavors will be more mellow. My opinion and Good Luck finding something. Just so you know also I quit smoking right after I got my ego and found the best flavor for me.
What I have right now is the 510 and some are suggesting getting a 901 instead because of the smoother hit. And as far as flavors go, I have all VG, from 36mg all the way down to 6mg - all of them giving me the same harsh feeling.