KVM switches

Miscellaneous Forums/General Discussion/KVM switches

Anybody used/using one of these?

I'm considering getting one as I already have a dual monitor setup, and need a test PC alongside my dev system but I don't want, or have space for, another monitor, mouse and keyboard on my desk.

1. Which KVM switch would you recommend?
2. Is there any mouse/keyboard lag?
3. Do they reduce the monitor signal to crap?
4. Any specific feature/spec I should look for?
5. Anything I should avoid?
6. How will it all plug into and affect an existing dual monitor setup?

Both my mouse and keyboard are standard USB ones. I do have PS2 ports on both PCs but I'd rather keep it all USB if possible.

Ta!