This was just lately spoken about. I even recall DLD saying about the Vacu-vin having a notch of more strength.
I'm in possession of both and personally I feel that the range of power is on par. Of course modding your [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]
Bathmate[/words] is seriously less expensive way to roll. But in what you save in money, you lose in comfort, in my opinion.
The hand ball, like I said in the other thread, is so fluid in usage. Just feels so much more effortless, which for me produces better sessions as it's more relaxing and enjoyable.
The Vacu-vin is good, it is strong, but my own body ranks the pressure from the hand ball pump and Vacu-vin to the same range, give or take a little for Vacu-vin.
I was blessed enough to be in a position where I was able to get the Extreme model and I do like using it. From time to time I switch to the Vacu-vin, just to keep things "fresh" in a way.
So, if you have a [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]BM[/words] and haven't modded it yet with Vacu-vin, go for the Vacu-vin. If you don't have the unit at all, the Extreme model is really much less hassle compared to Vacu-vin.
It isn't rocket science to set up the Vacu-vin mod, not at all. Just my personal viewpoint on the Extreme being easier to use.