Initially, I used Picassa, then onto Photoshop cs3, currently paying the monthly subscription to adobe creative cloud for Lightroom and Photoshop cs6.
I must say that Lightroom is my favourite so far.
If you are satisfied with gimp, then I would see no reason to change until such time as you want something a little more sophisticated.
When was 5.5 released?Lightroom 5.5
It's probably a beta version.When was 5.5 released?
I'm running Lightroom 5.4 and when I click "Check for updates" I'm told I have the most up to date version?
Adobe don't have "beta" versions - they normally release an "RC" version (Release Candidate).It's probably a beta version.