Damn I wrote a big response to your query janos and it didn't post for some reason, so I'll try again
I was going to suggest slide film janos. (I wish I could remember what I said before) With slide film what you shoot is what you get, as it is a colour positive film. As opposed to normal print film with is colour negative film. Here your at the mercy of your photo processing shop as far as colour balance etc is concerned. However if you choose colour negative most slide scanners these days and photoshop, I believe, can convert colour negative film to a positive image.
Paul I have some bad news for you regarding Kodaks Techpan films. I've read in other forums that Kodak stopping production.
If you're looking for films to use have a browse through this site. I picked up a lot of useful info there
http://www.robertreeves.com/index.html
or more specifically the links on this page
http://www.robertreeves.com/filmtest.htm
If you're seriously considering film photography then try to get hold of "Astrophotography for the Amateur" by Michael Covington. Basically the beginners bible to film astrophotography. Or "Atro Photography, An Introduction to Film and Digital Imaging" by H.J.P Arnold.
If you do decide to try your hand at it then be prepared to go through quite a few rolls of film getting your techniques perfected. One of the reasons people are turning to digital photography.
I'm not even going to try to preview this, this time so excuse the grammar and spelling