These companies are increasingly coming up against each other, and I can tell you from first-hand experience that both are doing quite well. I go back a long way with both, and it's great to see how they've grown and evolved to become leaders for integrated communications platforms, especially for hosted services. I've been posting about both for some time on my blog, so feel free to review those for more.
Anyhow, if these companies are on your radar, you should enjoy our chat. You can download the podcast here, and if you'd like to follow up, just drop me a line.