I have a location that has one main building with 8 other buildings in close proximity that are all connected with 62.5/125 fiber to the main building. Currently their fiber is connected to 10/100 switches with external fiber media converters. i want to upgrade network to GB switches with GB fiber connections. I also want to plan ahead for a possible voip system so I want poe switches. I can't go too pricey or it won't get approved. I was looking at Cisco SGE2000P and SGE2010P switches in the remote locations(some need 24 and others 48 ports) with sfp modules to connect to fiber. The Cisco 3750G-12S populated with modules at the main office for the fiber is more than I wanted to spend. If I do go this route are the GLC-SX-MM modules for the 3750G compatible with the MGBSX1 modules on the other end in the SGE switches? Does anyone else have any hardware recommendations? I definately don't want to install out of date hardware.