HSRP - Does the Standard Multilayer Image provide a routing protocol that can converge as rapid or near rapid (10/20ms) as when using EIGRP and HSRP together...Basically, is the Enhanced Mutilayer Image the best choice for achieving the fastest fault...

I am designing a network for a refinery and the vendor I am working with is suggesting the EMI image is required for routing within the LAN "no connections to the internet" I do not see a need for the Enhanced Image and feel the Standard image should...