Golf Simulators

For the price, the OptiShot by Dancin' Dogg appears to be the best quality simulator with budget pricing.  Would be curious to hear if anyone has actually used the OptiShot or other golf simulators.  The demo below looks interesting.  

Reviews of the OptiShot appear positive in general:

• The Hacker's Paradise by Josh Babbitt
• Golf Link's Top 3

Retailers online seem to have a similar pricing:

•  Dancin' Dogg Golf Simulator on Amazon.
• In The Hole Golf
• D.W.Quail Golf