BEST exhaust manifold for a 2007, 5.9?

[Motorhead]

I want to change the stock ex manifold for one that has the divider in the collector on the manifold. Looking at a STAINLESS one piece manifold. I have an exhaust brake so I am wondering about leaks with a two piece manifold. The STAINLESS have a cast spacer between the 6 ports so it doesn't seem like there will be a shrinkage issue.
Looking for good flow also. All suggestions honored.
This is the AFE http://www.thoroughbreddiesel.com/AFE/46-40011.htm

 

[seafish]

Check out the one from Steed Speed...he is an artist!!

http://www.steedspeed.com/cummins_common_rail_manifold

Fleece Performance dynoed with it and there is a graph with decent gains on it somewhere on a thread on CF.

Here are some more pics he sent me awhile ago with one under production on his CNC mill--

http://s1199.photobucket.com/user/phishwrapper/library/SteedSpeed?sort=3&page=1

 

[Joseph Donnelly]

I haven't had leakage problems with ATS or BD two piece exhaust manifolds. I use VHT header paint on them, no problems.

 

[Shadrach]

The Steed Speed wasn't available when I wanted one so I got the AFE S/S and am happy with it. David

 

[Bob4x4]

I have been running the AFE since it came out.Before that I was running the ATS.I have another AFE s/s polished unit I was going to put on but decided I was too lazy.........maybe after I break down and retire.

 

[BLNRAY]

I have a cast iron AFE manifold,havent got around to installing yet,thinking about having it ceramic coated first.found it on amazon for 345.00.