I have 2 MP10's on my back wall and they are great. I was planning on getting 2 more MP10/40's. I do have 2 Koralia 1's and 2 Koralia 1400's. Definetely enough flow.
Absolutely beautiful images. Here is my favorite aquascape. Here's Kang's tank. Used without permission.
http://spsholic.com/entry/MRkangTank