DLOCK15,
I noticed you have the same question posted in another thread. I'm not sure why.
First, it is really difficult to give you very specific advice with just that level of info. So age and situation are critical to understanding the big picture. Position player or Pitcher? Atheltic goals? Academic goals? Location? Major? How good of a baseball player are you? I know you've posted before. Any updates would be a tremendous help, so we can better help you.
I'm going to assume you are 15/16. WWBA 16U is a fantastic experience. More college coaches per square inch than anywhere I've ever been. It can be even more fantatic if you have previously reached out to coaches, and you know they will be there to see you play. Recruiting is a numbers game, and the more exposure you get the better your chances to find the right program. WWBA will give you "exposure quantity" for sure if you have people that you know are there to see you. It is also a great way to gain new interest from other colleges not currently on your radar. I'm kind of surprised that the Private Showcase college coach will not be in East Cobb, or could he be sending other coaches to WWBA? Also, if your college search is more National or East Coast, then WWBA is the place to be. If your college search is local or specific to one state then maybe you may be better served with the Private Showcase.
Again, it is difficult to guess with such little info. Have you met or discussed anything with the Private Showcase college coach...does he know who you are? What makes them so intriguing/appealing to you? Is this a school you genuinely feel is the perfect atheltic/academic fit? I guess I would consider going to the Private Showcase if (and only if) all of these things are in play....relationship with coach, on their radar, good atheltic and academic fit. In a perfect world, what is the best possible outcome from the Private Showcase? WWBA? These are questions only you can answer, but I strongly suggest you think them through logicially. If you have further info, please share. I'm sure others will chime in.
If you were a rising senior or current senior then I would absolutely suggest going to the Private Showcase.
Please let us know additional info, and good luck!