I upgraded from the Fanatec shifter to the Pro-Sim about a week ago. They had it in stock, and it shipped from the UK to US in only two days, amazingly fast.
I would have kept my Fanatec - I thought it felt great, and liked having the sequential mode (I don't have a dedicated sequential yet). However, I had recurring issues with the sensors going out of alignment, with no apparent cause, causing mis-shifts for a couple weeks at a time until it decided to fix itself (and then work fine for a couple months). It wasn't fixable through re-calibration, I wasn't able to find any problems when disassembling it, and grounding it to prevent EMI didn't seem to help.
The Pro-Sim feels pretty wonderful, and more pleasingly mechanical. That said, the Fanatec certainly didn't feel bad by any stretch, and is clearly a much better return in terms of money spent.
Setup and mounting were trivial. It detects as a standard USB joystick. Tuning the left/right and front/back tension was very easy, and was necessary because left/right was very stiff out of the box.
I haven't tried adjusting the throw length or shaft length yet - I've been happy enough enjoying it as is. They do include a shaft extender. There's a couple YouTube videos from Pro-Sim which walk you through how to do all this. The only tool I didn't have on hand already was something to remove the ring locks, which is only needed for the adjustment of throw length.
Out of the box, there was some user adjustment - 3rd/4th gear felt ever so slightly off-center to the right compared to the Fanatec, so I'd bang into the gate occasionally. I've either adjusted to this or it's worn in, it doesn't happen anymore. The push-down spring to get into reverse is quite stiff, I'm still getting used to this, but it's not a complaint.
It has a pleasing sound, but I will say that the sound travels through my house (through a closed door and up some open stairs) more than anything else in my cockpit (including my surround speakers), when you are shifting with "enthusiasm"
No one has complained, though - it's not that bad and it doesn't seem any louder than the Fanatec when you're in the room with it, so it must just be the pitch of the sound travels a bit more.
I'm looking forward to trying out the additional "shift lock" mechanism they're working on, but even without it, I'm very pleased.