What are the arguments over each one? Here are the 3 switches I am comparing:
Cisco mbps 48port $649 2x uplinks 1gbe http://www.bhphotovideo.com/bnh/controller/home?O=&sku=813296&gclid=COr-49q8lb0CFeZDMgodQWkAXw&Q=&is=REG&A=details
Dell mbps 48port $519 2x uplinks 1gbe
Cisco- Gig 48port $2272 4x uplinks 10gb sfp
Cisco SFP 20port $11652 10gb
Dell SFP 24port $9119 10gb
