Acer - Iconia Tablet / 10.1" Display / 16GB Storage Memory / NVIDIA Tegra Processor
Motorola - XOOM Tablet Wi-Fi
ASUS Eee Pad Transformer TF101
Right now I find myself mostly attracted to the Acer one, although the ASUS one has two USB ports which might be nice, but isn't a huge deal. Both have microSD slots, both have almost the same stats. The Acer one does tout a graphics card (how good is a decision left up to the reader).