granted, these were the 26-inch versions, but...
i built up a 26-inch wheelset early in '05 using sun ds-1 rims, and overall was somewhat disappointed with how 'soft' the rims were. they built-up nicely, but as soon as i started riding them hard during a trip to fruita in march, they began a slow downward spiral. by the end of the season, the tension imbalance required to keep them acceptably true and round was too much for me to accept. i unlaced them and used the hubs to build up a new 29er wheelset using salsa delgado x rims (very good rims, in my limited experience).
i've also found the mavic a719 to be an awesome (if a bit heavy) rim choice. talk about a solid wheel build!! those double eyelets aren't letting anything pull the nipple out of the spoke bed!
cheers,
mg