While that is true, I still prefer to run at minimum charge levels. It doesn't hurt anything at all. I do this with all batteries though, my automotive batteries, RC packs, airsoft lipos, and it's never caused any issues. I have enough batteries for my mods that I don't need to rush a charge cycle, and when I am home my life isn't so busy that having a battery on a charger a little while longer is going to change anything. But that is just me, I'm not telling anyone how to do their thing.Mooch's Battery Charge Table shows the long life rate for Sony VTC4 at 1A and the VTC5/5A/6 all at 1.5A, he states that charging at a lower rate on those won't help much more.
Sony's listed standard rate on VTC5/5A is 2.5A with a Rapid charge rate listed at 4A for the VTC5 and 6A for the VTC5A.