Which red dot for Ruger Mark IV lite (22/45 with top rail)

[n2horns]

I have a Ruger Mark 4 Lite  (22/45) and looking to put a red dot on it, something like the Vortex Venom or Burris Fast Fire 3.  Anyone have any suggestions?

 

 

[HuntHarder]

I Went with the fast fire on my Ruger 22/45.  I like it because it is very compact and does not say Vortex on it.