Were it I, I'd listen to the CablesAmerica guy. Monster is OUTRAGEOUSLY expensive, and it won't work any better than the other cable.
FYI, Cables-To-Go, and CablesAmerica are the same company, as far as I can tell. CablesAmerica seems to be Cables-To-Go's discount outlet. For the same, identical, cable CablesAmerica is almost always cheaper.
For example:
That cable, the one that Digitally Unique has for $19.95? At CablesAmerica, that same, identical cable with the same, identical part number (29105), is $22.55. At Cables-To-Go, part number 29105 is $38.99. Ya got me?