Hey Toma,
The toyo that Ross showed isn't a bad starter. The locking mechanism on the rail is not that great.
The Toyo film holders are great. Probably the best available (as far as plastic film holders go). Well worth the money.
Do you have any lenses?
If you're still after a monorail then email me: enrico@pointlightworkshops.com.au

(btw, g'day Ross!)