you think this is good enough?
http://www.ebay.com/itm/EXTRON-MODE...531?pt=LH_DefaultDomain_0&hash=item338952de3b
Been looking at Extrons on ebay today. That one is good because the sync connector has C on it, which means composite (which is what PVM 20L5 uses). This is also an awesome set because it allows RCA inputs too. I'm going to buy an extron myself now.
edit: It probably doesn't allow multiple inputs to be selected, so just know that component audio won't go through this switch.
edit 2: need to read the manuals, one mentioned that when there is no sync it will sync on green, which is not good for component.