I know I'm jumping in a little late here, but I can also recommend the TVone boxes. One thing to note however, is that at least on the 2355, while it can genlock, you need to genlock based on your output format (i.e. tri level for HD, Blackburst for SD) While on an imagepro, you can use black to genlock and HD signal. Not a huge deal, but one you need to know if you are using them. There are actually a few devices out on the market that let you take a blackburst or trilevel signal in, and use that as a reference out for the other type of sync. that are fairly cheap.