Dodd is not a SS but tube (6922 X 2). McC, sounds warmish then most SS designs but locks transparency. Dodd excells in speed, articulation and inner detail. As well as black backgrounds due to very low floor noise which is the result of going "Off THE GRID".
Again, I am not familiar with modded version of McC.
I am upgrading to Red Wine Audio Isabella preamp with build in DAC. That preamp might not be in your price range as it sells for 4K linestage and $5500 with Isabellina NOS non upsampling DAC.
In comparison to RWA, Dodd will give you 90-95% of Isabella's performance at 60-70% of its asking price.
Isabellina DAC is a completly different story and one of the reason for me to jump on RWA wagon. One of the best CD reproductions I have heard recently and the best in my system.
Cheers