I use 5.6.1 and 5.8.4 primarily. A little bit of admin munging on older perl5's.

I tend to target 5.8 or 5.6, 5.8 for project which will take awhile, be unattached to existing code, or may fairly warrant its own machine as host. 5.6 for the odd script; most of this would work to 5.004 or so except for my love of the warnings pragma.

My sense of the differences between 5.6 and 5.8 is dull. I don't chase new releases unless there is something to lure me.

Be well,
rir