Either one can work very well if set up correctly - I like the marzocchi fork myself for off-road work and have a set mounted on my xr250 trail bike along with an ohlins rear shock. I have the twin chamber zokes on a husky txc510...
Send them to Les at LT-Racing - he is a sponsor of the site here. He specializes in suspension setup for gasgas and husky - wp, marzocchi, sachs, etc.
You can find the website for LT-Racing here :
www.lt-racing.com
jeff