We are currently using CLE Math 100. We're on lesson 102 out of 170, and I actually really like it. It's straight-forward, easy to teach, no prep, and it gets done. My dd does well with it, but the problem is she hates it. She's advanced in a lot of areas, but I suspect she's bored with the spiral approach to math. She gets 100% on all tests and quizzes, and she knows the answers almost instantly. But she whines, drags her feet, daydreams, and asks if we HAVE to do math today. She tells me repeatedly that she hates math. Now, obviously, I understand that not everything will be fun, and I'm all for character training and teaching that sometimes we have to do hard things. Having said that, I've been looking at Math Mammoth, and I really like what I see. I've read many positive reviews, and I wonder if the conceptual math and mastery approach would be a better fit for her. I don't want to be a curriculum hopper though. I just don't know if I should stick with CLE since I like it and it's obviously working, or if I should try to find something that's a better match for her. (If it matters, she's my only homeschooled child... my older daughter is away at college). Any advice?