Anyone else out there use Mumble? It's open source, easy to use and very reliable. I've found the sound quality to be equal or better than Ventrilo. If people are too loud, by default, Mumble normalizes them. By design, Mumble operates with much lower latency than Ventrilo, so there is less delay. With shorter voice delay, coordination in our raids has improved where communication is required.
By default, overlay is turned on in Mumble. When someone is speaking in Mumble, their name lights up within your WoW interface. This can be disabled if desired, but I imagine this would be great for raiding with people you don't know. Ventrilo has this option, but it's not as reliable and is not enabled by default.
There is a smartphone app for Mumble, so you can chat on your phone while you're bored at the office. You can jump on in your car to let them know you'll be late for the raid. You could start it up when your computer gets BSoD and let everyone know that you're out for the night.
The best part? It's a good deal cheaper than Ventrilo. Mumble hosts allow you to purchase however many slots you feel is necessary. If you want 27 slots, you can purchase 27 slots, and that's exactly what you pay for. You're not paying for 32 slots while only using 25 of them.
The Ventrilo server I had planned on going with would have cost me $3.00 a month for a ten slot server. The Mumble server I'm leasing costs me $0.18 per slot. For my 12 slot server, I'm paying $2.16 per month, or $26 a year. A Ventrilo server with 2 less slots would cost me $36 a year.
It's also my understanding that you have to pay licensing fees to legally host a Ventrilo server on your computer. With Mumble, you can do this for free so long as your ISP allows it. So if your ISP allows for it, you could host multiple Mumble servers on your own computer and lease them out (or hand them out for free).
Cheaper, faster and open source. The only problem is that only a handful of guilds have started to use it. That's why I'm trying to spread the word. I recommend trying out a free trial to see if you like it. It's much lighter on the wallets for those of us who have dumped hundreds of dollars into Ventrilo server over the course of the year. Also, I think you'll find improved raid performance when communication and reaction time is paramount to success.
Would you or your guild consider using it? Do you pay for Ventrilo?