What about Comparing it to spending $8K on comercial speakers.
8k$ for 'comercial speakers', (whatever these are, pro speakers maybe?) isn't that expensive, serious speakers will easily cost you a magnitude more. Same goes for high end speakers, 8000$ isn't that expensive, some speakers cost 10x more... I know a guy who makes a billion dollars per year easily, he buys custom cars he gets hand built, he says nothing beats them for the value and at 100 million per car, he gets at least 2 or 3 built per year, just great value. In his backyard race track, he says that an Enzo lap time is around 1m49, where his custom cars do 1m48 and even 1m47, they are that fast, so this huge improvement you get easily warrants the price difference, they really have exceptional value. [/sarcasm]
I guess your definition of the word value varies with the individual.
41$ Dayton RS180, 5/5 value rating:
This Parts Express woofer has an anodized aluminum cone and black phase plug. It gives this woofer stealth fighter looks, but it does have the performance to back it up. Respectable harmonic distortion for this price range, and a very clean sounding low end. The response curve is very smooth, but the breakup has twin peaks that may be harder to manage in the crossover depending on how high you cross over. The low price, build quality and level of performance put this driver near the top of the value chart. Tested October 2005.
325$ SS, 2.5/5 value rating:
Comments: This is the new 18cm flagship Illuminator from Scan-Speak. It is a large excursion underhung neodymium motor design with low distortion and excellent build quality. There is a small hiccup in the response curve at 1200 Hz and a mild breakup between 3 and 4kHz. The frame design is particularly free flowing and begs to be installed in a dipole. Overall it's an excellent performer but unfortunately not quite up to the class leading (and cheaper) Revelator 18W8531G. Tested December 2008.
Scan-Speak 18W8531G 225$, 3.5 value rating:
Comments: Exceptionally well engineered driver in all areas. Uses Scan Speak's proprietary slit cone construction to control breakup nodes. Strong and well ventilated frame. Very low harmonic distortion and smooth, extended frequency response. Lots of copper in the motor is reflected in the impedance curve and overall performance. Not a whole lot to complain about here except for the high price. Needs a slightly larger enclosure than one could hope for. Expensive, but much higher on the value scale than any other +$200 woofer. Tested June 2006.
Discussed SS 7100 tweeter:
Scan-Speak 7000 ($398) - This driver is essentially the high end version of the XT25. Performance is indeed a small step up in all areas. Build quality is top notch with a thick metal flange that will never warp. Unfortunately, the price is ridiculous and value is low. Tested March 2008.
In context, looking at the figures, I don't quite see exactly why the SS should be said to be of high value either, as I said, it really didn't seem to warrant the 2x price over the 200$ tweeters, it doesn't look any better to me on those measurements (am I wrong?), and it costs twice as much...