Hmm, I'm in 2 minds about the HW 35. Bought a new one in .177 a few years back (2013?), it was not nice, got sent back to HC for a rebuild, still not good, but not nearly as twangy.
But bought an early '90's one in .22, & it's a different animal. At first I thought it had a weak spring, until I checked it on a chrono. Much smoother, just as powerful.