I'm about to start a new blog. I'm hesitating between using a paid version of Wordpress.com, or just install the open-source version on a VPS.
I am a web developer, and have all the knowledge necessary to provision a server, install Wordpress, handle updates, backups, and whatnot.
It's just that I already have to maintain a number of apps/servers, and for just a Wordpress blog, I'm not against paying to have it all maintained for me. One less hassle.
That being said, if I go this route, I want to be sure that I can change my mind later on; should issues arise (performance, availability of themes, plugins, etc.) I need to be able to grab a full backup of the website, and install it effortlessly on my server.
So the main question is: can I get a full backup of a wordpress.com hosted blog? And are there any differences in the database schema / application code in the commercial and open-source versions, that would complicate the migration?
Are there any other considerations I should take into account, before buying a wordpress.com plan?