Hey Nick
I have been on LDN 2 months and LOVE IT. After two weeks taking 3mg at night the spasticity decreased noticeably at night but some during the day. Now I can kneel (stiffly) for the first time in 5 years and spasticity in my hand has decreased too.
It is said to prevent the progression of MS which is why I started. It is also CHEAP, a very low dose & SAFE, and has been used successfully in the US for more than a decade.
I think that it is a very good idea to try it first. You can always move onto the others if it does not help.
Good luck, let us know how you go