Which bike bracket for Garmin Etrex 20

[Titanic]

I need to buy a bike mount for a Etrex 20. The bracket in the first picture looks so much better than the second one, but all the references I can get from searching this forum suggests bracket no. 2.
I just need something basic (and cheap since I need two of them)

Which one is the best?

 

[Titanic]

 

[Wild Woody]

 

[Titanic]

 

[Lou1]

 

[Rhino2]

 

[Titanic]