I load with a bunch of Speer brass and find the tighter primer pockets a +. Since I often run stout loads that are up around maximum, it helps the life span of primer pockets a little bit. The only real issue I've noticed with Speer brass is that I find about 1 in 10 have flash holes that are excessively out of spec., half moon or very small flash holes. But that gets resolved during trimming, so it really hasn't been a problem for me.
GS