NEW DAC PS Audio Direct Stream DAC or Keep What I Have

I am almost done with my system and I need some advice on my final audio piece.

I have a McIntosh MA7900 Integrated Amplifier with a pair of Harbeth 30.1 speakers.

The McIntosh has a built in DAC.

On the digital side I have the PS Audio Memory Transport CD player playing through a Wyred 4 Sound DAC 2 with no upgrades. The Wyred 4 Sound DAC 2 sounds a little better than the built in DAC in the McIntosh amp. A little more air, maybe. It could be the interconnect making it sound that way. I haven't experimented enough yet with those. The Wyred 4 Sound DAC has the HDMI I2S input that connects to the Transport and is what PS Audio claims is the best sound. The PS Audio DAC utilizes the I2S input as well.

Seems like the natural choice would be to get the PS Audio Direct Stream DAC. It can be had for a fairly reasonable price right now and has a new updated firmware application that is supposed to be a big improvement.

My question is do I keep what I have or does anybody know if the PS Audio Direct Stream DAC would be a major upgrade or is there another DAC I should consider.

Thanks for any advice.