Alright so I just started playing Shivering Isles, and I'm wondering which pieces of Madness armor I should use Matrices for, and which I should put Grand Enchants on.
I'm level 28, so it's all max level I think.
My guesses are:

Boots - Grand Soul Enchant(Could be better with Matrix because Athletics has benefits over 100, but is 12pts worth it?)
Cuirass - Matrix(Always wanna carry more, and a grand soul would only give 10pts)
Gauntlets - Grand Soul(Blade/Blunt have no benefits over 100pts)
Greaves - Matrix(Always want more health(Even though I have over 100% reflect damage) and grand souls only give 10pts)
Helmet - Matrix(Grand souls only give 10pts)
Shield - (Although I wont be using this because my Escutcheon of Chorrol) Matrix(Can't get this enchant otherwise)

Anyone have any suggestions on which to use the Matrix? also suggest which enchants I use for the grand soul gems please.

Edit: oops I just noticed the title says quest whereas I meant question