I'm using Luminar 4 right now, and honestly it does everything I need with a fairly elegant interface. Gone are the days when I just had to do all the local adjustments to an image that LR does so well. When my subscription with Adobe is up, I'm out. If they let you go month-to-month, I might consider staying with them, but having to commit to a full year doesn't work for me. I know that the big boys are all going to the cloud subscription model, but I'd rather support a company that makes good software and will sell you a one-time license for a stand-alone application. I'm not certain, but I'm guessing that Skylum can use my $$ more readily than Adobe.
EDIT: It turns out that Luminar will only activate if you disable your AV software, in my case Malwarebytes and Windows Defender. I went back and forth with tech support, to the point where they gave me a link to a copy that would install with my guard still up. Never got it to run beyond the splash screen, which would insist I needed to be connected to the internet. I even put the executable in my permitted list in both AV programs, and it still wouldn't connect for activation. So, the trial version runs but cannot be activated, and the "full" version will not run so you can activate it without first disabling the only thing between you and ransomeware (don't ask me how I know this; it's a very sad tale). So I'm still looking for a suitable substitute. Should I find one, I'll post it here.