While I have thrown the Cross Current, it is my opinion that the Mega is faster. I further believe that faster is the need in wind fighting as long as your casting stroke can handle it. As you might expect, the faster the rod, the more the lifting power in the butt. If you like the faster action, the Cross Current shouldn't be a bad choice.
Believe it or not, the rod I most recnetly reviewed that reminds me of my belove Megas is the Stream Dance GLX Maximum Line Speed. It is the first 5-weight I would consider taking to the salt.
If you asked me to demonstrate wind fighting or long casting today, I would use a Mega 8.5-foot, 10/11 weight.
As I am certain you know, the weight of rod, reel, line & backing can and does become a fatigue factor over a long fishing day.
PS. Always remember that what's good for Bull Moose is not necessarily good for you.