Thanks for all the replies!!
Hal --- My 9 yr old son and I did recently get a Gamo Hornet air rifle, which we're having fun with at 15 yards in the basement (against the wife's "better judgement")..haha.
I appreciate all the feedback (and anymore that can be given). I'm an engineer by degree, so doing the research and learning from the more experienced is half the fun for me. I will definitely try several out at my local gun range that rents pistols.