I work in a webdesign company where we're concidering starting to offer an Open Source CMS solution to our clients, and we've narrowed it down to SilverStripe.
What I'm wondering is how you've experienced using SilverStripe over time?
Are upgrades an issue? Does it take a lot of work when you have multiple sites to do it on, does it break modules, widgets, translations?
Have an upgrade ever suddenly been so drastic that you have to completely redo a site?
Thanks in advance for any feedback on this! :)