Can u move things like Google maps / browsers etc without any problems as they don't auto update?
Not to sure what will be safe to move! Can some kind people who have tried this give a little more advice before I try this please.
Well, you shouldn't move apps that require a background service running all the time.
To see which apps are constantly running and which amongst them have background service running, I recommend SystemPanel
. It costs 3$ but it's a great app and you'll now for sure which apps are safe to move to sd.
I can tell you right now by looking right into SystemPanel screen that HtcSense itself (of course), widgets, home replacements like LauncherPro, WidgetLocker and native Sense apps (Mail, Messages, People, Settings, Weather, Youtube...) require background service so it's highly recommended not to move them to sd.
Having said that, I'm not sure if you could move Maps and Browser without any problems but with all 3rd party apps that you could move with that tweak I've posted, I don't see the need to move stock apps.