I've recently bought an HW100S with Venom cylinder and sold my AAS400 & S410k.
The Weihrauch is more consistent but just as accurate as the AirArms and the trigger is so much smoother.
I originally bought the S400 for HFT and felt the Weihrauch should do at least as well and with its trigger and single shot adapter, possibly better. I was reluctant to sell the 410k because it was perfect for hunting, but the HW100 is just as compact, albeit a little heavier, but with more shots and a better magazine. In fact it comes with 2 magazines that cannot double load and with a sling, the weight isn't a problem.
So I now have one rifle that easily replaces two and probably surpasses both in build quality and performance.
Like Kerplunk says in his review, there's no power curve - all shots are at the same power (until it's below about 90bar - then the power suddenly drops.) There is a regulator to control the pressure - this seems a simple device, but so much the better - it certainly works well.
I use AA Field pellets and find these to be very consistent, but it would be interesting to know what other users think about other makes of pellet in this rifle.