[Q] Need help with cyanogenmod topic

I wanted to experiment and put cm-11 on my AT&T galaxy s3 sgh-i747. I was led to the d2lte.zip for a US galaxy s3 but after seen the d2att.zip for the galaxy s3 AT&T.. Can I use either?. Would one work better than the other?. Or is there something better that I should try as its not that stable right now. Any help or advice would be awesome..
Thanks..