When Asa makes a list, everybody listens. I have seen this post linked all over the place this morning. Since it does list some quality downloads, I have to point you in his direction as well.
I’ve had this post in draft for about 3 months now and just can’t seem to finish it. I can’t finish it because I honestly haven’t found 10 add-ons that I’ve kept installed for any length of time. Now that Robert’s posted his list, I feel like I should get mine up.