We're determining the specifications for two Switches to use between Windows DataCenter hosts of HyperV virtual servers and their SAN. Is there any reason to get switches with SFP ports, given that the length of cable will only be about 10 feet and that cat 6's capacity is 10 GB (the same as SFP)? I'm thinking that a 10 GB managed switch with only RJ45 ports would be much less expensive than one that has SFP ports. We want to use port channel to pair ports of the separate switches together for performance and redundancy, and we want a switch with at least 16 ports. What is the least expensive switch you recommend?