I'm moving my sites to a new server this month. Sticking with the same host, but I need a little more speed and flexibility.
I had planned on making the ATX Community one of the first few sites to go, but it looks like you folks are dealing with enough website-related turmoil for the moment, so I'll hold off and save this site for last.
When it is time to move, there will be some minor downtime--I'll need to shut down the site during the move which will take about an hour, and then it'll be another hour or two (give or take) for the domain's DNS settings to propagate.
Inevitably, there will be one or two members who won't see the new site for an extended period of time because their ISP's DNS servers are garbage. In cases like that, I highly recommend using a 3rd party DNS service for your entire network.
Cloudflare DNS (I use this for my home network (router configuration) and on my cell phone)
OpenDNS
Google Public DNS
I'll post again with an update as I get closer to the end of my site transfers.