This is just plain and simple a really well executed product. I highly recommend it. And the support is top notch as well.
I've been using this extension for about a year and a half and it works great.
I'm currently working on a website and I had one very minor, but strange issue, so I contacted Mike and he personal fixed it for me! I also inadvertently caused a conflict once, which was all my fault and Mike helped me fix that as well.
Definitely a great extension!