Wow, that's such a hard choice.
I love painted covers, robot covers and Russ manning anyway. Put all 3 together....phew..
If I was forced to make a decision I would chose #3 as I think that it was the first issue that I owned and the cover depicts an impossible task due to the size of the robot, that just makes you want to read it to find out whats going to happen.
I will have to look for the MRF.
What would you rate as your favorite ?
I have always liked issues 4 & 5 the best. If I have to choose just one it's issue #4.
Some lovely books there.
I always liked Steve Rude's art and the cover to Magnus Robot Fighter / Nexus #1.
I think is absolutely fantastic and very retro in style.
I dont have a scan at hand at the moment but I am sure you have seen it.