I'd try your garden variety Belkin switch. I've used them with great success on Amiga/Mac/PC combinations that use the same monitor.
www.belkin.com (or check eBay).
One caveat - My friend has gone through a couple of them, but in his case he also uses the keyboard/mouse feature (lets you use one keyboard/mouse with all the computers). I usually don't use that feature because Amiga keyboards (with one exception, the A4000 I think) don't use PS/2 connectors nor are their mice connected that way in >90% of cases either.
So he's gone through two Belkin switches whereas I have two being used for several years with no problems, but I don't use that feature. Just an FYI.
You can sometimes get good closeout deals on them at the Belkin site, otherwise there should be many on eBay or similar sites.....
kevin orme
amiga university
www.amigau.com
