I'm just catching up with this. Thanks for such a thorough review Kurt. I'll enter my own opinion as to whether the el cheapo is better than my modded version of the Pioneer tower. Since my mod didn't affect the 52's bass response, I'll echo Kurt's opinion of bass reproduction. The Dayton goes a good bit lower, and will also play louder before bottoming out, and is cleaner overall. I slightly prefer the midrange and lower highs of the Daytons--I think they have a bit more detail than the modded 52, perhaps because the driver layout is simpler, and the greater horn loading of the replacement Vifa tweeter on the Daytons gives a more focused sound to the lower treble. At the same time, the Pioneer replacement tweeter has a bit more air at the very top, and provides a slightly wider sound stage. All that is kind of a wash--the main advantage of the Dayton mod vs. the Pioneer Mod is the superior bass response. And lower shipping costs. Thanks again Kurt!