Size, a sliding grid, and which software you already run.
The HyperSpeed is the smaller mouse
Razer lists the Naga V2 HyperSpeed at 108 × 62.6 × 38.5 mm and 59 g before the AA. Corsair lists the Scimitar Elite Wireless SE at 119.23 × 73.48 × 42.17 mm and 114 g. If your thumb already reaches a compact fixed grid, the Naga is the lighter carry. If the far column is too close or too far, size is not the fix, the Key Slider is.
The Key Slider is the only physical reach adjustment in this pair
The HyperSpeed's 12-button plate does not move. The Scimitar's panel slides so the grid sits under your thumb. That is the whole reason to pay for the Corsair if the Naga's lower rows force a palm shift. Button count (19 vs 16) does not reverse that.
Synapse versus iCUE, plus Stream Deck
The Naga remaps in Razer Synapse. The Scimitar remaps in Corsair iCUE and can map Elgato Virtual Stream Deck actions. For a WoW setup, pick the stack you already run. Stream Deck is unused if you are not already in Elgato software.
Naga V3 Pro does not replace this comparison
Razer launched the Naga V3 Pro on August 11, 2026: magnetic 12/6/2 plates, a lockable ring-finger button, USB-C rechargeable HyperSpeed or Bluetooth, 117 g with the preinstalled 12-button plate, 118.8 × 75.5 × 43.5 mm. Keep the HyperSpeed for the smaller AA-powered 12-button job. Skip to V3 Pro only if those plates and the ring-finger lock are the purchase. The HyperSpeed remains the relevant comparison because the V3 Pro's plates and ring-finger lock are a different purchase.