Just want to say Sam that I've probably got the biggest chip on my shoulder of anyone about immoral markup, excessive hype, and dishonest marketing associated with oh so many new products that hit the market in the MYOG scene and elsewhere, and I've taken a lot of crap for it myself, so I definitely am with you.
It's hard to not end up being eminently cynical about this stuff, especially once people start dropping the "free market" bomb like it's dogma.
Unfortunately, the proof is still in the pudding, so we've got to test it regardless. To me, the M50 pricing was outrageous(just my opinion, no offense intended to anyone), so I waited for others to test it, and while I didn't refuse to work with it, I left acquiring it up to potential customers if they were interested in it. I found it to be pretty interesting fabric however, and in all fairness, felt it was very strong for it's weight. Difficult to work with considering the DWR, which even though it felt like it should be insanely good, didn't live up to the waterproofness of the M90/Intrepid fabrics.
So my only point was just to say, there's no way to know how good a fabric is by the specs, or the hype, or the price, it simply is or isn't.
There's a new run of Intrepid Taffeta, that weighs slightly more than the last run, and is slippery also like M50, but seems to be the most waterproof DWR available if I'm correct that it's the sample R. Nisley tested that had huge HH (higher than some sil). The thing is, so much of what makes M90/Intrepid great, is not the DWR, or even the fibers composing it, but the insanely tight weave, which really shines on the taffeta versions.
The tight weave affects not only water and windproofness (greatly), but also durability, while the individual fibers may not be as strong as a 6,6 1.1oz nylon, the weave is nearly impervious to snagging, and much more abrasion resistant, which makes it functionally, much more durable. However, not all of the same fabric is equal. The gray ripstop, seems to be the lightest I've tested, but it's also slightly less tight, and thus, seems to be less resilient, although I've been using it on my quilts for the past year+ and haven't had any issues. The black seems to be the best of the RS, with the blue somewhere in between.
The old Taf had a better feel, and was slightly lighter, but the new stuff is tougher, and much more water resistant. In fact, it's pretty freaking insanely so.
Which btw, if anybody wants some, I'm sure Josh can help you. Which, regardless of his play asking what you guys would pay for a hypothetical fabric, I know he's firmly committed to offering things at a *fair* price, as opposed to a market price.

