Went with the standard, non-PVHES GonG. I haven't installed my o-ring yet but it's a MUST with the PVHES stem (my bent stem is so loose it went flying across the room and I lost my first load before I even got it turned on...). But I think once I do install it I the draw resistance on the GonG might be a bit too restrictive... I won't know till I get back in town tomrw but I if that's the case a PVHES GonG may also be in my future; I'd already have one if they made a carbed version but I seem to be in the minority with that...
And I've only used PVHES stem once so far (o-ring-less) and I gotta say Ba Dup Ba Ba Bah, I'm Lovin' It!! I am a fan of the stock stem but I feel like they may get kicked to the curb (till i get to breakin stuff... I love being able to pull as hard and fast as I want and get the same size hit as my slow and steady pulls. I'm sure it will only get better when it fits snugly and if that's the case then I'll strongly consider the PVHES GonG, and perhaps and teeny tiny glass drill bit...
The f-bomb is still da bomb, lovin every bit of it! Is it worth +$100? The jury is still out on that one but it does what it's supposed to do very well! When connected to the Solo it feels like they were meant to be together. I find myself looking around for my bubbler forgetting my filtration is already attached
I get great clouds on 2 and ridonkulous clouds on 7 and I get lifted WAAAY faster than sucking on the stem. I definitely recommend it (PV discount is a MUST!)