I suggest to use mldonkey. The UX is very different so it takes some time to accustom to it but it is very powerful software:
- it connects to more than one server
- the search is better
- it is very stable Be sure to use the latest version, keep an updated server list (or fetch them from clients and servers) and to configure kad.
It works very good for niche stuff, especially if you have a community around the stuff being shared