Yorkdale did a great job for us. We got a high quality board layout and a working prototype pcb first time round. He went out of his way to help even when some parts of our project went off spec. Couldn't ask for more.
Calvin is a very professional software engineer who works with complex aspects of application development in his day job - he is especially knowledgeable about difficult application development such as drivers and so on. Calvin delivered success for us on an OSX project!!