My pso knows a few guys who bowled nationals already and they told him urethane was key.  Anyone else hear that.  Also any suggestions on which balls to take.  Only taking 3.
No Rules solid
No Rules pearl
Eternal cell
Timeless
Unhinged
Pitch black

+1

I just talked to a friend who shot reasonably well, as nd his companion team is in the top 15.  He said they had nothing in, and played way out using a lot of surface to open up a little outside.  He said urethane wouldn't have worked for them, and they saw nobody doing well with urethane.  I am still taking my pitch blue but it would be a sucker play to try to use it inside.

Team plays very similar to a short pattern. That may help on equipment or lines you may want to consider.

I had a good look in team with a 2" pin nitrous for games 1-2
struggled game 3 for a 605 set
wish I would have had a urethane for game 3

That's a very respectable score. 
He had to have a good group that all stayed together
That's also important

Also, I wonder whether or not a lot of people aren't misreading what's out there for Team event. They're seeing the ball read early, so they're natural inclination is to move in. The problem is that there doesn't seem to be a ton of length or volume to the pattern. With that being the case, the further in you go, the more it exaggerates that read. Like others have said, I think if you attack the far outside, which a lot of people claim is OB to start, you can keep yourself from ever having to get too far in. The difference this year is that it doesn't seem like you need the ultra-aggressive balls and surfaces even while trying to break them down.