In looking at the following processors:

LAKE Contour Pro 26
Ashley Protea 2.24C
BSS Audio FDS 366
XTA DP226

The LAKE is significantly more expensive than the others, but features some so-called "proprietary feautures" such as:
"ISO-float ground isolation"
Ethernet Port
"SmaartLive integration"
"40-bit floating point"
"Raised Cosine Filter"
"Linear Phase X-over"

My questions:
Do these "unique features" truly distinguish the LAKE from the others from a real, operational standpoint?
How so?

Responses from those who 1) have real experiences with these processors or 2) have heard second hand would be greatly appreciated!