Funny, I owned the Toshiba as well (called AT270 here in Canada) and the G Pad 8.3 and now the Tab Pro.
Don't be misled by some members here waxing poetic about lag. There is zero lag within apps (games, video playback etc). web browsing is fast and fluid.
Where there can be occasional delays is switching between apps. Apparently some owners are upset because it takes a whole second to switch between applications. Personally I don't spend much time switching back and forth for hours on end between apps
I'd rather just use the tablet.
With that in mind, there are ROM's that will provide a faster experience. I'm not overly thrilled with the magazine UX and don't actually use it. Some love it though.
The screen is vastly superior to the G Pad - I found the G Pad to be very dull and dim. Also battery life is excellent.