After buying the Galaxy Tab 7 Wifi from Samsung, I will never buy another tablet from them again. While the tablet was nice enough, I didn't like all the Samsung bloatware and UI customization that was on it. And most of all, and I cannot stress this enough, I was extremely pissed off that they never produced even one software update for it (even though it needed one). In my opinion they have too many devices to support and are not interested in updating them in a timely manner because of the customization they have to put into it. Samsung would rather you buy their next, new and improved, tablet to get the latest software.
I am hoping that buying a Google Nexus product will mean I will get some form of software updates for as long as the hardware can support them.
The Samsung 7 plus is now being updated to ICS. You must use Kies to do it (not OTA) but i just updated mine today. Sweet! Samsung is notorious for being slow on updates.