What are some good tablet pc's? (alternatives to ipad) also are these ones good? what one should i get?

I fear you may be equally as disappointed in either of these. First, the Android operating system, up until the version 3.0 that's coming out, was never intended for a tablet device. Second, these tablets you linked to are really cheap Chinese junk. Ever heard of "Zenithink" or "Superpad" before? A whole bunch of tablet devices running Android 3.0 (called Honeycomb) are coming out soon. The Motorola Xoom is being touted as the best head-to-head competition for the iPad2. If price is a consideration (the Xoom is rumored to be about $699), I'd wait a bit to see what else is coming out this year. Please consider a device running Honeycomb which was designed specifically for tablets, and get something that comes from a reliable manufacturer. Also, read reviews from reliable sources like Engadget or Gizmodo.