Arkham Asylum, The Invisibles and WE3 are great reads, The filth is a bit over-the-top and i understand if you don't like it, in my opinion: Morrisson it's either Hit or Miss, he's a very talented writer and has very interesting ideas but sometimes his storytelling and his pretentiousness gets out of control...
Still i think the 3 comics i recommended and his run on X-Men are worth reading