Miki ..... I've got the digitech vocalist worstation ex ... it's not a rack mount unit ... it is easy to use, has some pretty good preset harmonies, lightweight etc. I use a sennheiser e845 mic....
I use the presets, and my wife, who is my most honest critic, says it sounds really good as long as I don't overuse it ...
I got mine off e-bay and there are a number of different models, including rack mount if you prefer, on there right now .... Check into the different models to find out how old they are, functions, etc.
Good luck .....
t.
PS Go to the e-bay site and do a search on 'digitech vocalist'.
t.

[This message has been edited by tony mads usa (edited 01-31-2003).]