Carbon - How to renew? Perpetual or subscription?

[mlange]

I'm getting similar renewal alerts on our active Ultimate perpetual license that I've owned for many years. Because I purchased our Carbon second-hand, I do not have the original bundled Pro Tools/Carbon license.

I also have a Pro Tools perpetual license that lapsed, but I purchased an "Avid Pro Tools Perpetual License Upgrade with 1-Year of Software Updates & Support Plan" last month to restore this Pro Tools program to active status.

So, I guess what I'm I'm chewing on is selling our older (but active) Ultimate perpetual license and moving to vanilla Pro Tools with our Carbon. The active Ultimate perpetual license would be bundled to sell with our HD Native PCIe / 4x192 i/o system as a package.

I just don't want to overlook anything and regret my decision.

Sorry in advance if this off-topic - I've been lurking on this thread for quite some time.