Hi BrantKen – it sounds like

Hi BrantKen – it sounds like you’re looking for the Edirol/Roland V-4EX, which is $1995 new: http://www.amazon.com/gp/product/B00BCRQTKA/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00BCRQTKA&linkCode=as2&tag=videomaker22forum-20

..and $1450 (+$34.05 shipping) used: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575034783&toolid=10001&campid=5337235943&customid=&icep_item=121728219475&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg

This mixer seems to have all of the connections you’re looking for: http://ecx.images-amazon.com/images/I/514bKWfU6gL._SX425_.jpg

…with a couple of caveats:

1. only one of the four HDMI inputs is 1080p – the other three are 480p

2. the mixer outputs to standard def – good enough for webcast, but might not be what you’re looking for

Hope this is helpful and good luck with getting your message out!

Bill
Hybrid Camera Revolution
http://www.hybridcamerarevolution.com