1. I spent a several hours with the SX demo and did not find the new interface as intuitive as VST5.1 - the help file and manual were no help either. To upgrade would mean spending a few months getting to know the software to the extent where accessing functions become second nature. So much for making music.
2. SX2 is not the path for me - SL2 is. I don't need (and will never see a need for) video or surround sound functionality. I don't need unlimited audio tracks either because I mainly work with midi. Unfortunately, SX does not let users disable video or surround processing as a preference to reduce resource consumption.
3. I do not see the need to spend money now then spend more money later to upgrade to SX3 (and how dare Steinberg try to trick me into doing so). The money is better off in the bank earning interest or used for better purposes (like buying Ravity
Based on the above, I decided to take the risk and wait to see what SX3 brings before I throw money Steinberg's way.
Just my 2 cents worth.