Red Frog puts on a good race. I did this race in 2010, and 2011 respectively. I would of done 2013 but was out of town that weekend.
Pros:
you get to dress up and get muddy
easy race day packet pick up. probably the easiest packet pick up I have ever experienced
you get a furry helmet and a great shirt(i like cotton shirts)
they send you off in waves but if you miss your start its no big deal for them to let you go with the next one.

When I did it in 2010 it was challenging but doable.
When I did it again in 2011 I found it to be completely different experience the obstacles I felt were trying to compare more like the tough mudder. More obstacles involved climbing and just seemed more towards someone taller with a stronger upper body.
The race overall is so much fun. It makes you wish you encountered things to jump over every time you run.
and once you finish covered in mud and most likley a little scraped up. you get hosed off by the fire department, you can donate your shoes and there is a great party with beer.
the environment is great.
I normally don't enjoy the after race entertainment I want to go home, shower eat and nap.
even though I was tired and muddy I loved the warrior dash.