I've ran H-works hubs with CX-ray on my XC mtb and they've been great, I have used them for everything between gravel to even some downhill tracks. Had them for 3 years (although I primarily use my road bike), haven't serviced the hubs at all and I have no complaints.

Ok, I did something really stupid and now I'm looking for some advice.  Got my frameset in today and started the build with something that should have been easy - installing Di2 wires.  I decided to try and keep the Di2 wire anti-noise plastic tie wraps on, so i attached the end of a Risk Internal Cable Routing Tool to the Di2 wire and ran the wire down the seat post heading towards the rear derailleur hole.  Of course, the Risk tool end came undone in the chain stay so I pulled the Di2 wire out and attempted getting the risk tool end out.  The tool end got lodged in the chain stay so with a lot of playing around I finally got it to start moving, the only problem is that with moving the frame around trying to get that sucker out it has now lodged itself in one of the seat stays.  I wish that I could leave it there, but I was able to get the tool where it moves up and down in the seat stay and with every movement of the frame it makes a god-awful rattling noise. Any suggestions...

Have you tried to guide it out with a stronger magnet? The magnet coming with routing kits are often in my experience quite weak.

I'm considering ordering together with some wheels, specifically C53DB in 60 mm (rim .RD923-60C) It's possible to get them in the ultralight version, anyone have experience with their ultralight rims, and if so do they feel fragile?