In Navy DEP would like to know about NUKE and CTI programs?

I am in DEP currently but still thinking about my options as far as what job to choose. I scored a 87 on my ASVAB so I've been told I should go into the nuke or cti program. I signed on as a sonar tech as of now because I have some reservations about how hard the other programs are. If anyone has gone threw either of these or is currently in I'd like to know what I'd be in for exactly? I know I could learn the stuff I just tend to get burned out on things faster than most so I don't want to go into somthing that's going to be to much for me, on the other hand I like the money better.....I dunno dunno dunno someone please give me a little direction. Thanks