On the upside, because Vuze is an open source project, there is a large community of programmers, designers and users who are continually testing and improving it and there's an excellent FAQ. Mainly the fact that Vuze is extremely bloated and tries to install two toolbars when you install it. There's no doubt that Vuze offers some spectacularly fast download times but this comes at a price.
Vuze (formerly known as Azureus) is a bit-torrent client which follows a similar format to eMule but its makers claim it can offer significant improvements in terms of hits, download times and navigating available material.
Softonic review Super fast and media rich bit-torrent client