Not sure testing follows the .. some old (16IC), something new (383L), something borrowed (11000 & 4000) and something blue (titan).. the circuit board is my skeleton 4000 and finally an EFW2. My weekend is a final hardcore testing session for the OSX drivers I've been writing. The 428ex through 490ex have already been tested and work nicely. Steve at ATIK has kindly loaned me a 11000 and 4000 for testing for the weekend. I'll probably try putting together a through the scope comparison tomorrow .. but for now.. let the testing commence!