I have this problem, the camera I'm holding is always the one I want to shoot with. Often when I'm running out the door in the morning I'll go to grab a camera and I'll think, "Oh yeah, that's the one!" Then I'll see another that I have fond memories of, pick it up and have the exact same thought, even though it may be a different type of camera.
So I started looking through my pictures, looking at my Flickr postings by popularity, and wondered if I'm more consistent with one camera or another. With my MF stuff, occasionally there would be an image I thought I had taken with my TLR but it turned out to be my RF or vice versa. With my 35mm, sometimes I would recall an SLR image as better than it turned out to be.
(Side-effect of pentaprism shooting, or just my baggage?)
I was also thinking about
On Being a Photographer and how we're not always the best judge of our own work, but you know, we all have images we're not ashamed of. Hopefully.
Too much thinking, not enough shooting!