Well the 3A/16 combination is a different thing -- it's not one vs. the other, really. I would start smaller -- just get the (freqphased) 13's, if anything. IMHO, the DSP box has been rendered moot by the freqphase technology, if I understand it correctly.
And go back and read some of Mike's (tyrion) troubles with customer service, you may not want to do business with them at all. Just get a pair of Ety's and be done with it.