Looks like I'm the first who would give a slight edge to my paternal vs. maternal grandfather. Both came of age in the 1920's/30's and had some pretty hard lives by today's standards. They both grew up in Appalachia, working odd jobs to get by and using family farming for supplemental income. Neither got past the 6th grade in education. As such, it was hard to relate to them once I hit my teens and early 20's, especially during & after high school & college.
I have some fond and interesting memories of both, although they were both pretty hard and "cantankerous" characters. But, I think my paternal grandfather was a bit less "checked out," even though he was a little older and passed away at age 82 in 1988, since he was a little more engaged with his grandchildren on a personal level in terms of talking to us and teaching us things. However, I got more interesting stories out of my maternal grandfather, and rare growing up activities like [ra]**** hunting and checking traps for muskrats along the Ohio river are highly memorable.