You might want to look into Lakeside Baptist Church on Garland Road, near Buckner:
http://www.lbc-dallas.org/
Their MDO is Monday/Wednesday 9:30-2:30 and you can choose if you want one day a week or both days. I have heard good things about them from several people.
My son goes to Academy Kids MDO at FUMC Mesquite:
http://www.academykidsmesquite.com/
Their program is Wed/Fri 9:15-2:15. It is about a 15 min. drive from the Casa Linda area but it offers an extended day program (morning and afternoon) if you have an appointment to make before 9:15 or after 2:15, and a monthly Kids Night Out in the evening. They also accept cloth diapers, which Lakeside Baptist does not. My son loves going there and they love him. Many of the staff are parents with kids in the program themselves. I just felt a good vibe from the moment I first walked in. Can't say enough good things about them!
But most important is to find a program that feels good to you. Good luck in your search!
-M.