ATEN reckons it has the solution to your possible digital connectivity problems with its VS481 4-port HDMI switch.
It's HDMI 1.2-certified with HDCP v1.1 support. You can toggle inputs by pressing the buttons on the front panel or via the supplied infrared remote, which has a 10m line-of-sight range.
The VS481 supports of 480p/720p/1080i and 1080p, and PC resolutions of VGA, SVGA, SXGA (1280x1024) and UXGA (1600x1200).
£100 and it's yours.