Can anyone compare Fastmail to Rackspace Mail? I have used Rackspace Mail for 7 years and have been happy with it for both my clients and my family. It looks l

Can anyone compare Fastmail to Rackspace Mail? I have used Rackspace Mail for 7 years and have been happy with it for both my clients and my family. It looks like RS is much cheaper for similar mail box sizes and offers pretty significant upgrades such as mobile sync, archival and exchange support. As a Rackspace customer for over 10 years, I have always been happy with their service. I do think the webmail interface is a bit dated. However, I do see plenty of praise for Fastmail, and perhaps I haven't investigated their services fully.