I think its ridiculous that Librarians have to flounder like this to select good management software. Relying on colleagues means the same software gets selected time and time again - but does not make the best choice. I have set up a website to collect reviews of software from librarians. Please help others by signing on and adding a review for the software you use/have used. It should become an excellent tool for narrowing the difficult search.
You can find lists of users and demonstration sites at http://www.koha.org/drive/ and http://www.saas.nsw.edu.au/koha_wiki/index.php?page=KohaUsers or by asking the koha users mailing ...