I have the 40-690 which is essentially a direct copy of the DW788. I believe the 40-694 is essentially the same as to 40-690 except that it has a gizmo to hold the arm up for blade changes, etc.
Assuming it is the otherwise the same, I have a few comments.
Like the Type 2 DW788, I had to make some changes to the bottom arm to reduce back-and-forth movement of the blade. I also have not been able to eliminate the vibration I get a certain speeds but find I can usually select a speed that works without too much vibration.
All in all, it's a good saw for it's price. One thing to consider is maintenance and repairs. For a while, Dewalt was doing the repairs and maintenance. By now, Delta may have established their own network but it's something to consider.
Hope this helps a bit.
Jim