Despite the cost, I have been glad to finally be able to halt XP when I want to in LOTRO. I'm also someone who enjoys the choice of being able to experience whichever available content on level if I want it or not.
Thanks to the disabler, I'm now part of a few groups (one of which has a fluid membership) on Landy that heavily rely on the Stone to do these things. It can be a bit of work to get the groups rolling, but they are well worth it in my opinion, so I wish you luck!