Hello thevolt5
Both switches will 'switch' your HD signal - what's more important is how much noise they may add to the signal on its way through; depending on your screen size you may or may not see the affect the switch has on the signal its passing.
Keep in mind the Altona switch is in the US and the price shown is ex International Shipping, Import Duty and UK VAT; it may be a .co.uk web address but its a US retailer!!!
Here's the spec on a switch that was designed to switch HD - see
http://www.zektor.com/hds41/specs.htm
Best regards
Joe
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