Well, if you still have the Spacedeck, we will certainly look forward to your comparison. Welcome to this Circle.
As you may or may not have seen, the other frequently recommended upgrade for this table is the Auditorium 23 mat. The only mat that seems to have made much of an improvement from what I have read. About $100. Don Better Audio in Cleveland and Pitch Perfect in the SF area both carry them. Just got mine this week and loving it.
Still need to get around to the DPS, especially since it can be used with the Dyna P75 phono pre as well.
What cart will you be using?