So after many months of reading the reviews on MTBR, I went for a pair of the Light Bicycle carbon rims from China at £135 each delivered. They were shipped a week after I ordered them and arrived 9 working days after shipping. All good from start to finish. Excellent email communications.
They arrived yesterday, 3k weave, 32h, 372g and 380g. Absolutely perfect finish inside and out. They were very easy to build up. They went up tubeless just as easy as a Stans rim - I used a couple of layers of insulation tape and the usual valve.
First ride tonight and wow - they are stiff. I wasn't sure they were worth the money riding them to work on the road this morning, but round fast berms and corners where you are really leaning into the bend they just don't flex like a Stans rim. Stans feel really whippy by comparison. I ran my usual pressure and had no tyre roll or squirm at all. A really noticeable difference. I guess this could be due to the wider rim profile compared to the Stans rim, though.
Now let's just see how long they last....
Some pics of the build, of the bike with the new rims, King hubs, new XTR discs and some nice wider bars too as my old ones were damaged. Ison also had some custom Sala/MTFU ODI lock-on grip lockrings made... Just about the most awesome thing I've ever seen.