For anyone who wants an affordable control surface for use with DaVinci Resolve instead of their $30K hardware I have listed on eBay an unused Tangent Wave CP300. I bought it new from Jigsaw 24 just under 18 months ago & it has literally never been used beyond plugging it in the check it works.
BTW I hope it's OK to post this link but I know that there are people using Resolve especially with BMCC and with 5D3 RAW and might be looking for a great control surface at a bargain price so please think of this as a Public Service Announcement :)
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=171121061035