After level 1 or 2, CLE is written directly to the child; it is semi-spiral, so it has a lot of review, which is what my dd needed; also, it was old-fashioned math teaching; it avoids the stuff that has been in modern maths that was confusing
Also, it’s not colorful-just basic, which works better for her, too
The speed drills can be done by you just setting a timer for one minte and leaving; also we wait until the bokk is completed to do the speed drills as it seemed an interuption to do it any other time
Math Mammoth is a mastery; it has worked well for many and is inexensive, too; it confsed my dd, but looking back, mastery was not a good option for her due to lack of review (also, the same nonsense that was confsing in MS, I think is in MM-of course yo can skip it, but that requires you)
I think you can by a small sampling inexpensively for MM to test it out
Horizon is spiral; other than, that, I don’t know about it