ACL Manager is one of those components that you just can't live without. Only one tiny issue the whole time I've been using it and I put in a support ticket at 2:30am and had the correct answer to my problem in my inbox in 5 minutes. A quick php5.ini edit (not even a component problem) and we were back in business.
Sander offers a top-notch product with unbeatable technical support. The ACL Component has far surpassed my expectations, and I'm pretty sure I'll never create another Joomla site without it. Highly Recommended. Thanks Sander!