The Samsung Galaxy Tab is the next big thing in Tablet PCs, it runs on Google Android OS and is gaining lot of popularity for its easy-to-use interface and lots of other useful apps and features.
You can also choose the legendary Apple iPad, but Apple has a few restrictions.
In the end, it depends for what purpose do you want a tablet PC.
If you are want to have fun on the go and at the same time be able to do all the things you normally do on a laptop or desktop - the Apple iPad would be a nice buy.
But if you plan to take your tablet PC experience to new levels, explore the world of technology, new apps, hi-speed functionality and many more cool stuff then I'd suggest the Samsung Galaxy Tab for sure.
All the best! Happy New Year!