Having not had a chance to read all of the above (though I read the first few pages last year) here is some of my two cents:

Chota's Breathable Mukluks:  I got a pair of these two years ago for a fall trip into Quetico (9 days).  My then girlfriend got a pair as well (hers have held up better than mine, but she uses them less and weighs 80-100# less than me).  On the second day, one of the laces tore through one of the loops.  On closer examination later, it turned out that the loop is made of one piece of tough nylon covered with a second piece of cosmetic fabric.  The actual loop that the shock cord was supposed to go through had been epoxied closed and the cord simply ran through the cosmetic stuff.   I later fixed this.  I wore them again the next spring on an 8 day trip.  By the end of the second trip, the soles were worn almost smooth and had almost no traction on many surfaces--I slid out a couple of times (to be fair, I am a big guy and have a bit of a limp, so between Q granite and my weight I put a lot of stress on boot soles--still I would have hoped the soles would have lasted longer).  Another friend who was wearing the same boots (for the first time) wiped out on a rock race and was badly hurt (we got lucky and were able to air-evac him thanks to some other canoeists with a SAT phone).  Granted he was moving too fast on a slippery surface.  I had a local cobbler put a material called Aqua Stealth on the soles for this spring.  It's a rock-climbing sole material.  This stuff was awesome and gave me better grip than almost anything I have ever worn and seems to have held up well to a fair bit of abuse this past year.  My right boot has leaked since mid-way through the second trip.  Not terribly, but the whole point of these things is that you are going for dry feet.  This fall, an entire lace loop tore out of one side of the boot when I was lacing up.  The boots have very little arch support so I found it necessary to us a pair of Super Feet insoles.  
All in all I am unimpressed.  Considering that the boots cost over $100 initially I found the construction to be somewhat shoddy.  With resoling and inserts, they cost me about $70 more.  Not enough bang for the buck.  The only real plus is having (mostly) dry feet and warmth.

NRS Storm boots:  I am generally a wet-footer except for the serious cold water season.  Because I am usually paddling solo, I find it very advantageous to be able to get wet to the thighs if need be at difficult landings, etc.  The Storm boots have worked very well for me.  Traction is good, as is ankle support.  I did use a better insole (again, the Super Feet) which I think helps.  I also had the local cobbler add an additional loop on the back of the neoprene booty and reinforce the stitching between the booty and the back of the boot to prevent the booty from tearing away from the boot itself when pulling it on.  I would recommend this.  Used with a polypro or silk sock liner they are pretty comfortable, though after a long day in them I'm usually looking forward to getting them off and de-pruning the feet.  A bad rock/root snag did catch and tear one boot above the toe (a dumped me headlong--pack, canoe and all) which will need a repair, but they held up admirably otherwise.  They've stood up to 70-80 days of use in the lake country since last fall and will take a lot more.
 
That is my (long-winded) opinion.  Probably more like a dime than two cents.
Cheers and happy portaging,
GP