Things I liked: I have a HW30s. This is a more hefty rifle with nice forearm and hand grip checkering with Weilrauch engraved on both side of the forearm. It has a chisel lock up rather than a ball bearing. Amazingly accurate. Much larger piston than the R7. What a difference for a few dollars more.
Things I would have changed: Absolutely nothing
What others should know: This HW50 is between HW30s and HW95, so you can just buy one HW50s instead of 30/95. Once you found good thing, you want to have each one of them. But after a while you end up shooting only one regularly. For me, it is the R7. But then I have also the 50 and 95 and TX200. This one should be all I need in hindsight.