Hi, I'm at the tail end of my clinic research phase. I have looked into Shady Grove and GIVF (and my local RE here in Delaware). I have pretty much ruled GIVF out at this point, largely b/c of their non-communication. It's kind of hard to get a hold of people even to ask questions. I got some good info from their donor coordinator, via e-mail, that I'd be happy to share with you if you would like, but it took a few days for her to get back to me. A phone call to their financial coordinator (to whom I was told I needed to speak to get my $ questions answered) went unreturned. Their fee policy is complicated, but I did a spreadsheet to get clear on it, and it makes sense to me now. happy to share that, too, let me know.
I REALLY like the information GIVF gives about their donors (audio of donor interviews, their Myers-Briggs type, etc., things that mean a lot to me), but when I did the math, I realized they don't have a bigger donor selection than SG, just better info about their donors. Which does matter, but not that much.
The other clinics I'm considering had so much better responsiveness and spent so much time answering all my questions that, all other things - size of donor pool, cost - being of equal, the outreach and general feel of dealing with the facility made GIVF fall away.
If you want the shared risk option, have you considered Shady Grove? A number of women on this site have used them and they could tell you more about actually using them. I can tell you that from a prospective patient perspective, they are terrific: I've spent literally hours on the phone with them (cumulatively), and I always get the sense they are totally happy to do so and want very much to be helpful.