I must ask why you are looking at Burris in 3-9 and the other two in 4.5-14? For your considered price range you could get a Burris FFII in 4.5-14x42 with the ballistic plex reticle, which would be my recommendation. While I have never shot a Mueller, I have looked through a few and their glass is good for the price but not on the same level as the Burris or Nikon. Another consideration if you are looking to save a few bucks is Pentax... Glass is right up there with the best and still a little less $$. I know you can get a Gameseeker 30 in 4-16x40 on SWFA.com right now for less than $200... Then you would have all the magnification you need for the .204, better light transmitted thru the 30mm tube and still have a few bucks for ammo!
just my 2 pennies worth.