Your service sounds too good to be true. I'm with Topica now and they're okay but I can't send my subscribers to a custom "thank you for subscribing" webpage once they subscribe.
For your information, I have switched from Microsoft BCentral to your company because of your prices are almost 2/3rds cheaper that them. Keep your prices low and I'll be a customer for a long time. The fact that mailings can be scheduled ahead of time is also great.
We have been a long-time happy customer of Ezine Director (since 2005) and we don't plan on leaving...