I've spent much of the evening searching for a nice wide 29er rim for my own project, and keep coming back to the Salsa Gordo, but at £75-£85 each they might be a bit much for you, and at 35mm it does pretty much limit you to really big tyres.
The gordos are a bit too wide I think. The WTB rims look good, but are only 21mm (bead seat, rather than overall). I would prefer a couple of mm more, but I will get one in the new year if I can't find anything better. I bought the hubs and they seem ok. The front doesn't spin quite as well as I expected for a sealed bearing unit: it's a bit rough. The rear is great.
The gordos are a bit too wide I think. The WTB rims look good, but are only 21mm (bead seat, rather than overall). I would prefer a couple of mm more, but I will get one in the new year if I can't find anything better. I bought the hubs and they seem ok. The front doesn't spin quite as well as I expected for a sealed bearing unit: it's a bit rough. The rear is great.