Testing IBP has been on my ToDo list for years. I've seen it get pretty decent reviews from some reputable people. Of course, I've switched from Windows to Linux, so I would have to run it under VMWare or Wine.
You can download IBP and test it at no cost to see if you like it. There's no need to part with your cash until you know. And even then, they also offer full refunds if you're not satisfied for any reason within the first 30 days.