Atomlab are very heavy but pretty strong, if your looking for extra width id reccomend a tioga, or a dx 32 or dm 24 .
Both a good compromise between Weight, Strength , and Price. Which are the 3 main factors in trials.
In fact Xdream on here is selling a r4ear 26@ 32hole tiohga rim, think its in new condition aswell.
Cheap, works well what more could you ask for in a rim?