Don't worry too much about only being able to use the core DTS if that's how it is for your playback system. The bitrates are high enough that few people would be able to distinguish them with any reliability from the lossless version, and this would require high quality audio equipment set up in an acoustically controlled listening environment (perhaps the most important element, and something many people simply do not have).

Editing to add: I know it's a subject of great passion for us all, and it's easy to get impatient with these things, but seriously guys: it's just a movie. Chill out and just have fun with it.