Thanks. Good explanation. I think I will stick with the normal FW as VOIP shouldn't need more than 2mb as long as it gets it quickly.
They have 6 phones, so DMZ won't work. Although I'm sure there is another way, maybe.
You also bring up an interesting question I have about the traditional speedtes.net. Which is, what ports are actually used to do the test? I do have clients that freak out if the speed test doesn't give them what they are paying for. If I knew the ports speed test used, they could be put into QOS as well, or in this case, left out of it.