From my personal experience, DATBootcamp was not representative of the actual DAT (especially for PAT and RC) and is insanely expensive so I wouldn't recommend it. So just be aware of that. I haven't used CracktheDAT so I can't comment.
If this is your 3rd time re-taking, what did you use the first time? Sadly there aren't any "magic" prep programs that will get you amazing scores. So I would pick what you use carefully.