The snowboarder thing will be prevalent at both resorts I believe.
I think you said you can only go weekends(too lazy to check to see if you did forsure). It can get real busy and crowded since they're the only two "large" resorts in SoCal, but still small in comparison to other mountains
If you are into park you'll probably have a pretty good time since I'm pretty sure both are usually ranked high in park rankings.
Just remembered that High has two resorts. The east is less busy and more advanced terrain(also no park). The west is the one where the park rats are.
Look at both resorts trail maps/video. Passes are pretty reasonable, considering getting one myself now that I looked at it. I don't know if you ever get a vacation from the corps or not, but the benefits of the Mt High Pass seem pretty sweet.