usb dac for hi-end system

Read about Weiss at 6moons.com which uses Firewire.For cheaper sound I am interested in the Wyred $1k and $1500 models.USA made and use Sabre chip that's the rage.Plus you have Esoteric and always thought they made great sounding gear.Looked at/heard their newer gear?
Chazz

Uhhhhh should have looked at your system so Wyred suggestion was for someone else.Also wondering about if you have checked PS Perfect Wave which folks seem to think is pretty good.But I still have a nose bleed and total envy after looking at your rig.
Chazz

No offense taken, Ghasley. I had meant the music data was packeted via USB. It is not packeted via firewire.

thanx for the comments, the best way should be first try out the wavelength I think.

Why does it matter if it is in packets or not? Some S/PDIF implementations buffer on the target, so why does it matter how the data makes it to the DAC? Also I don't see where Firewire data is not "packeted". All serial based links (serdes) use data packets. Firewire has some extra features that allow higher throughput than USB (less host interaction) but for single stream PCM it shouldn't matter. Unless you show some real data, I'm raising the BS flag.