cast manifold or stainless??
 

I am thinking of getting the To4s kit but I have read some negative things about the cast manifold and the fact it isnt divided. I also noticed that a lot of the other kits come with stainless manifolds and have very even length pipes coming from the exhaust side of the motor. The Apexi kit, Greddy T-78, and I think the HKS TO4e kits all have stainless manifolds.
Should this be a big concern of mine, and is the HKS TO4e kit the same as the XS TO4e kit, do they have the same A/R and trims??