manifold question

[allen600]

has anyone ever ran any of these manifolds? im not sure which one to go with

this one:
http://www.godspeedproject.com/store/index.php?main_page=product_info&cPath=3&products_id=448

or

this one:
http://www.godspeedproject.com/store/index.php?main_page=product_info&cPath=3&products_id=19