I finally got symphoniq up and running here (with the .NET monitoring). The product looks very solid, but I'm a bit concerned about the instrumentation they do on the webserver (AKA it can break our products). It does the low level instrumentation, as well as the end user (round trip time). Its a pretty cool product, and the use of MS Reporting services is a great addition.
I am evaluating this against Symantec i3, which we have a site license for. i3 is pretty cool, but its complex and the agent are hard to deploy.
We shall see what the other technical folks and business side people think of the product and if its something we cna move forward with.
I will keep you all posted about what I think of it.