i was able to compare lyn SPM and unicorn magnum XL side by side.
SPM grinds much, much faster.
- SPM: five cranks on grind setting number 5 yielded 2.1g.
- magnum XL: i adjusted the grind until the product was visually similar to SPM@5. five cranks yielded 0.68g. i then tried cranking as fast as i could for as long as it took me to do the five leisurely cranks on SPM, and i got 0.77g.
obviously, SPM required significantly more torque. my friend was asking me if i thought someone with arthritis could use SPM. i have no idea, but probably if you grind back and forth. that's much easier (but slower).