I love mumble because I can set up a server of any size for free on my own machine (I also have the bandwidth to support it of course).

Yeah, too many guilds still use ventrilo, when Mumble is way better. I dabble a bit in playing TF2 competitively (Not in leagues or anything, but scrimming and stuff) and pretty much every clan has switched to mumble. Easier on the computer, easier to set up, etc.

Agreed, our guild uses it exclusively.

It's easy to set up, it's much cleaerer, there's no graduated delay as there is with Vent and it auto-normalizes everyone so you're not going in and boosting or squelching people individually.

Another nice feature is that, if configured properly, it will temporaily crank down ingame sounds when someone is speaking, like the GPS in your car.

i host a private teamspeak 3 server for my guild, i dont thing there is anything that will beat it, mumble does not even have ts3 in its Comparison Chart lol

Mumble is great for two reasons:

1) It seems to automatically adjust (normalize) volumes.
2) The overlay.

I would LOVE to use TS3 or Mumble, but for some reason, there are a bunch of people in our guild who CANNOT get either of those to work. So, we use vent, due to problems between the keyboard and the chair, me thinks... >.>