question,, which is better when looking at solar panels.??

Over paneling is one thing and even sanctioned by Morningstar. I don't personally believe it's good for the controller as it can get hot enough without stressing it.

Pushing the Voc limits is not a good idea. I've watched the Voc on a panel jump 5 volts on cold day. I've seen reports of someone driving over a 12,000 ft pass on a cold day when the sun peaked out. Cold, cloud effect, elevation and pop goes the controller.