Just a comment on the Nextie wheel option: I have built two sets of wheels that use these rims and love them both. My first set I got when Nextie was young, trying to make a name for themselves and they were letting them go cheap. The experience I had with them let me take the plunge on the second set, which I built just a few months ago.
The rims have a deep center channel, and you can unseat the bead of a tire by hand roadside. Not something to take for granted these days. What sealed the deal is there is nothing this size capable of handling so much weight. Assuming WW is using the standard and not the lightweight version of these rims, they have a 250kg weight limit. I could find nothing else in that league and wanted it for the application I was using them for.
They take to tubeless beautifully. I am presently using Vee Snowshoe XLs tubeless and they held air without any sealant just fine for days. With sealant they take about 5 weeks to need a refill. My other set uses tubes and I am running cheapass Arisun fat tires (wire bead) on it. Wire bead tires go on with soap, determination, elbow grease and some bad language.
The fact that they are 90mm wide and give you the fattest of the fat look and are gorgeous besides... that had no bearing on my purchase. Did I mention they are gorgeous?
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