I've not heard any of those DACs, but I suspect that the upper range MSB's (Gold and Nelson series) would give most DAC's at least a run for their money. Particularly when one considers the upgrade path (up to 24/192 upsampling, for example), the MSB's are a great value.
I used my Link II for a long time with the stock PS, and was very pleased. However, it was clear that when I switched out the PS to the AA PSII, it made a HUGE difference in soundstage and bass response. The difference is even more pronounced when one moves up to the Gold Link series.
Don't make the mistake of thinking that the power supply isn't a very important part of the total package. Clean, high quality power - with the ability to handle transitions effectively - is one thing that separates good gear from very good gear.
Again, I'd suggest looking for used alternatives for PS. Old Audio Alchemy PS's do very nicely, and one can even find used MSB P1000's occasionally (although they get snapped up quickly).