I've got Bosch wires right now. They're work well enough but the wire lengths aren't quite perfectly laid out like the Ford wires are and they're also not numbered like Ford's, which was a nice touch.
They were on a warehouse closeout at rockauto.com and were super-cheap which is why I grabbed them, even though I didn't need wires yet at the time. I'd probably go with OEM/FRPP wire next time.