Been searching and searching and I'm not sure I'm any better off than when I started, so thought I'd seek out the experts.

I'm looking to purchase a graphics tablet, probably used, but cost is definitely a concern because I'm not sure I can do what I want with it. Here is what I'm looking to do:
  1. Rough sketches of various woodworking projects (I can sketch faster than I can use Sketch-Up or other CAD software.)
  2. My version of video-scribing as shown here: http://tinyurl.com/agxzqmv


Wacom Bamboo seems to be what everyone recommends and there are a number of used, older models out there on ebay. Which is ok as I'm a used, older model myself. But I'm sure there are other brands and models.

What should I look out for in a used tablet?
More importantly, what model(s) should I run from?
Should I just bite the bullet and buy a cheap, new model?

Don't want to start a holy-war, just looking for recommendations and/or suggestions.

Thanks!

Bill W