I own 3 LessLoss Signatures. If you're worried about "sheer size," the LessLoss can be had in various lengths and they're also very light and flexible. So if you ever had sensitive footers, you shouldn't have to worry about whether that important balance will be compromised. Apart from that, the DFPC provides an immediately (within a few seconds) obvious improvement on the audio event. Without a doubt, the Signatures can make a huge improvement.
I found their website very informative, too, to understand how the DFPC is such an effective power cord. (www.lessloss.com). Hope this helps.