Two things:
1. I have two different Mac browsers because it seems different forums work better with one or the other. For example I can't use Firefox Mac with this forum but Safari works fine. Same with some other sites and forums.
2. If you're going to switch from Sonar, switch to a program whose last major update happened six months or more ago. Then most of its bugs should have been worked out by now. When it comes out with a new version in six months, you can switch back to Sonar