The short version
The March 2026 Hypervolt 3 update flipped the value math. The Hypervolt 3 Pro now out-muscles the Theragun PRO Plus on stall force and undercuts it by $250, while Theragun keeps the deepest amplitude, the richest feature set and the longer warranty.
When the Hypervolt 3 Pro is the right pick
You want the strongest, quietest, longest-running gun for the money — ~70 lbs of stall force at $349 — and you do not specifically need Theragun’s deeper stroke or extra features.
When the Theragun PRO Plus is the right pick
You want the deepest 16 mm amplitude, integrated heat and breathing training, an OLED display, multi-grip versatility and a 2-year warranty — and the $599 premium is acceptable.
Also worth comparing
For the previous Hyperice flagship, see the Hypervolt 2 Pro; for the full field, the best massage guns.