The rims offered by GBP are regular Weinmann AS7X rims, ano'd in small batches in Cali. If you want ano, get'm. If you're good with silver, plain-jane AS7X sell for about $17 brand new. I been running some WeinmannAS7X rims laced with 12g spokes to Shimano cb-e110 rears and generic fronts. Cost >$100 in silver, and like $105 in black, from Niagara. For future projects, I think I could build'm cheaper than that and have better front hub options....
AS7X have the raised center and basic dimensions as the old Araya 7x rims, but with plain, undimpled spoke holes. They're as good as any other modern single-wall rim i've used, but double-walled rims are just so much more robust....