I can't compare my wife's TH80 to the V-series, but I do have a K2 (not pro), and I think the Epomaker is the better built keyboard of the two. Keychrons absolutely aren't bad, and the V-series has QMK which is, to me, an absolute plus, but the Epomaker is a fine board itself.
You could always open her up and see what the thud is about, could be errant foam, could be the stab needing a bit of love. I do recall that the stabs on my wife's (then new) board required a bit of a cleanup.
14-year club represent.