I picked up the SU-8 for $170 and no regrets there. Some new models by SMSL and Topping are coming, but pricing AFAIK is not known yet. There are a number of other choices, it's just a matter of what performance and features you care about most, within your budget range. I would not care if the DAC was gold plated and had every feature known to man, I am not spending $4000 on a damn DAC.
I may be able to hold off until I see those releases...
I could probably use my current Mayflower DAC/AMP combo and just run the DAC to the Monoprice 887 until I purchase something nicer.