Cheap DVI switches any good?

Yes, that's going to be fine.

The quality of a cable or connector can't really make any difference to the quality of its output, so you're fine.

That's why paying more for an expensive cable isn't always a good idea; like I said: The quality of the picture won't be different, but it might die slightly quicker than one of a higher build quality will.

Yeah I'm going epically cheap on the HDMI>DVI cable and phono adapters lol. I guess the cable might make a difference for audio since it's analog but hell if I notice it on a PS3 or on cheap Logitech speakers.

Thanks +rep

Ok that switch was fail... ran fine at 720p but artifacted the image at 1080p. Returned.
Anyone have recommendations? Needs to switch between 2 DVI ports and 2 3.5mm ports/2 composite audio ports. HDCP compliant would be nice but not necessary.
Below £30 if possible, thanks.