Putter · Both Overstable
The Discraft Luna (3/3/0/+3) and Innova Rhyno (2/1/0/+3) are both putters, and they fly similarly, with only minor differences.
The Luna is the faster disc (speed 3 vs 2), needing a touch more arm speed, while the Rhyno comes up to speed at a lower power level. Both discs share the same stability rating, so they finish their flights very similarly. Estimated maximum distance is about 57 m for the Luna versus 38 m for the Rhyno.
The two fly alike in shape, so it comes down to speed: pick the faster Luna if you have the arm to drive it, or the Rhyno for an easier, lower-power flight.
The Luna is the faster disc (speed 3 vs 2), needing a touch more arm speed, while the Rhyno comes up to speed at a lower power level. Both discs share the same stability rating, so they finish their flights very similarly.
Neither — both carry the same stability rating and finish their flights very similarly.