C.R.
I also did mine at the Ultrasound Experience. What I loved most about it was being able to watch my daughter move around inside me. I always felt her but to actually see her little arms and legs move was absolutely amazing! I watched the DVD when I got home that night and cried. I'd suggest making your appointment at a time when your baby is usually awake and active. That way you can get the most for your money.
Also, I don't know if they still do this promo, but when we went, we were referred by friends. Because we gave their name as a referral, we got a free photo album. The photo album isn't anything too special but it was free! If you need a name for referral, you can use mine, C. Rich.
Enjoy your Ultrasound Experience!