Check out DeVore Fidelity Gibbon 8's. If you like the Vandersteen sound, you'll love the DeVores.
FYI: the 3A Sig's have the same "footprint" as the 2Ce's. Both speakers are 16" wide by 10" deep -- the only difference is the height. The 3A Sig's are 48" tall, about 8" taller than the 2Ce's. While the 3A Sig's do take up more "airspace" and thus seem a bit bigger than the 2Ce's, the extra volume of the 3A Sig's speaker cabinet yields a deeper bass response. The drivers in the 3A Sig's are also significantly better than the 2Ce's.