"Be aware, that if you purchase a licensed version, it is only good for that version. If they release an updated version, you will have to purchase that new version. Even if it fixes bugs in their software, and believe me, this software has bugs, they will charge you to update."
This is not true, all NCH licenses come with 6 months of free upgrades. After that period if a new version is released then you can choose to either keep using the version your license supports or you can upgrade your license for a discounted price to use with the latest versions and this new license will also come with 6 months of free upgrades.