I ended up getting myself a R-26.Here is a cool recording I did with it:http://soundcloud.com/kristofferlh/frosty-the-hydrophone
I would suggest saving up for really good preamp to put in front of your zoom.I am saving up for a Sound Devices Mixpre now to use in front of my r-26 =)
That is a really good tips! Do you know if they ship worldwide? To Norway in my case...