I'll weigh in, as I have had Nuru sessions with Monica, Diamond Jenet, and Jennie Leen, and I have even seen Victoria (non-Nuru) several times in the past (welcome back!)
As for the two the OP was asking for, Monica and DJ, both provide great sessions...
I see Monica somewhat regularly. She has a fairly standard routine for her sessions, which is amazing! Add pampering to the session activities, and it is great every time. It's like going to hang at an old girlfriend's place for a while; I always leave with a smile on my face, and I never tire of her sessions.
I have also seen DJ several times. As described, she is the OG of Houston nuru, which also means that she has trained many of the rest. I have seen Jennie Leen and a few more that have worked with DJ over the years, but none can compare to her skills. She just seems to bring that 'extra something' to the sessions, a little more freaky, in a way that only a mature provider can. Which is probably why a few replies mentioned that she was their preference. After my first visit with her, I have only returned when I have 'eaten my Wheaties' and when i have been in a particular mood...