Jean-Philippe, many thanks for your report. Your research is much appreciated and addresses one of the questions I had about the DNSMadeEasy service. 93% of users found your backup server within an hour, sounds great.
I've been investigating this subject recently as well, and hope to duplicate your success.
The missing piece for me is learning how to create the mirror server and keep the data up to date.
I'd be grateful for any remarks you may care to share about your procedure there. Thanks again.