Ratio of gearbox Answered

The worm gear produces a lot of friction as the worm gear pushed to spur round.

You should as Steve says find the Spur gears more effective and so give you more torque at the output.

Note - a worm gear is one way only the force on the out put can not transfer through to the drive (can be an advantage)

The worm gear will give you a bigger turn down gear ratio with fewer components and possibly in less space.

using many gears the spur gear box will be noisy and more costly and complex.

horses for courses.

Not to forget, my favorite, stackable planetary gears.

https://en.wikipedia.org/wiki/Epicyclic_gearing

You can find planetary gears in garden water timers or eBay

http://www.ebay.com/sch/i.html?_from=R40&_trksid=p...

Since the spur box is more efficient, all else being equal, the spur box will give more torque