Nordost Red Dawn revII vs SPM

Rackon, do you find the Quattros emphasise the lower mid-range a bit? I am trying out the Quattros now (SPM ref for speakers) vs Bearlabs and Siltech silvers. Am using full sets from each manufacturer. I find (or am I imagining) that the Siltechs are a tad soft and "kindly euphonic" in the upper register, Bearlabs do not colour the system, and the Qs as above.
I had the same experience as you with Quattro vs SPM vs Red Dawn (never used BHeaven).

I agree that the Red Dawn is more system specific. The Blue Heaven is an excellent all around cable. Does not match the Red Dawn if the RD is in a system it is matched well for. By the way, I no longer have my Red Dawns, I have Siltech.

On the subject of red dawns, does anyone know what Harry Pearson's objection to them was? In his TAS review of the Valhallas, he praised the entire Nordost line "except for the red dawns". I notice lots of Nordost wire for sale-- from blue heaven on up to Quattro Fil, presumably as people are moving up now that the Valhalla is out-- and I was thinking of replacing my Flatline Mk. II speaker wire (Sunfire Cinema Grand voltage outputs to Legacy Focus woofers) with some used Red Dawns as I'm quite happy with the RD interconnects I'm using from my lexicon dc-2 processor to the cinema grand's front channels. I'm looking for tighter bass. Any suggestions would be appreciated since I'm relatively new to this hobby/obsession. (My front ends are a CAL cl-10 changer and a Sony S7700 dvd/cd player). Thanks in advance.

I am glad Harveyb asked why HP objects to Red Dawn. HP has done so on more than one occasion. I once got cable recommendations for the Atma-Sphere MA-1's from Paul Bolin (TAS): Quattro Fil and Blue Heaven. When I asked why he passed over the RD, I got no reply. (I received replies to other questions.)

Red Dawn uses extruded silver over clean copper (and more of it) than the silver-plated Blue Heaven. Maybe the extrusion process results in more transparency in the upper octaves, which may lead to a more ruthlessly-revealing character that doesn't flatter all systems. I'm using RD throughout, and find my satisfaction varies enormously as a function of the software. With great recordings it's wonderful, but....
Before I isolated my CDP with a Neuance platform I was getting pretty fatigued by RD's vivid
portrayal of upper octave junk. I'm still seeking a less-lean IC to switch in for too-bright recordings. I've just tried Harmonic Tech Pro-Silway MkII, and am amazed how similar it sounds to RD! (FYI Note that RD revII speaker cables are approx 13AWG, wheras BH is 16AWG. I think SPM is 12AWG?). Is SPM RCA IC less lean than RD, or should I try something else?