Because all of Acer's Android tablets will be running Android 3.0 (otherwise known as "Honeycomb") most of the units tested were not functioning. The 10.1-inch, dual-core Tegra powered unit did work, which was used for some HD-video testing.
The unit was supposedly sluggish, but it was a pre-production unit. Engadget report that the display was bright and had good viewing angles. It is confirmed to have two cameras also.
As for Android based units, they had their hands on with the 4.8 and 7-inch versions, both being very early units. Glossy black screens and brushed metal backs. The 4.8-inch unit has a screen resolution of 1024x480 (21:9 aspect ratio!) which makes it wider than Dell's Streak, with the 10-inch video hardware preview coming in video, you can check it out by clicking the source.