expensive

Certainly not a horible plugin – does an ok job. But wow – the cost of the add-on modules are steep. Depending on your site, you may need several to be effective. Want to alter the form a little – 40$ add-on. Want comments – another 40$. Want an RSS module – Bam! another 40$. There are a dozen or so. And then on top of that – EVERY year you have to pay ANOTHER 10$ xtra for EACH add-on in order to ensure it works with any WP updates.
Don’t mean to throw cold water on this product – there are some situations where it would be fine.
But for me – Sorry there are other more cost effective and higher value for money products out there.