100% totally agree with @kryten After suffering through the release of RW6, I was hesitant about upgrading to v7. But, I hopped on board early-on during the beta period. I was very, very pleased that the RMS guys not only wanted our feedback (bugs and feature requests), but that they were fixing the (few and far between) issues very, very quickly. They pushed the release of v7 back until they were absolutely sure it was going to go smoothly. And, I believe it has.
Since your fairly new to RW6, you might also be happy to know that the RW7 user interface is very similar to v6. You should not have any issues upgrading - there’s no additional learning curve.
Do yourself a big favor, and purchase it sooner than later. As Stuart said, it’s worth every penny.