Since it doesn't sound like you're going to make your own even if we suggest it, I'll make a different suggestion. Take 2 of the outlines you really like, that are in a format you like, and that have been pretty accurate in covering the materials. Pick the one you like the most, and then use the other one and your class/reading notes to add, supplement, and rewrite your favorite. It's important, IMO, to go line by line, topic by topic.
Then, once that's done, read through it and try to shorten it. Rewrite more, summarize in your own words, etc. One stupid little thing I do is I look for lines of the outline that have only a few words on the last line. I'll try to shorten it up to not "overflow." It seems like a dumb exercise, but it gets me to read through the outline, think critically about what I absolutely want/have to have in there, and become familiar with my outline and the subject matter all at once.
By actively going through an outline like this, you'll probably get a lot of the same benefit of making your own. After first semester, I've done this for every class.
I'll add a small word of warning though - this may not be the best approach for ConLaw. Not making my own outline in that class was a mistake for me. I did well on the exam at the end of it, but I walked into the open book exam in a panic and didn't feel like "editing" an old outline was enough to learn the material. Then again, maybe I just didn't really get ConLaw all that much. To each their own.