Fargo, the S5 is tuned differently than the Hailey 1.2. The S5 was designed to be a bit warmer and more laid back in presentation than the Q3, yet have a lower center of gravity with more bass presence. Overall the S5 is a well balanced and very coherent speaker. The S5's bass is accurate & follows the music without dominating the frequency spectrum. When the music calls for it, the S5's can "freaking pound" as Jeff Fritz remarked on first audition, but can also render layering and terrific inner detail within the bass frequencies if the accompanying equipment and source material are up to scratch.
The Hailey 1.2's certainly move plenty of air & go deep in the bass due to the design of the speaker. The top section is a complete 2 way speaker (Hailey 1.1), with a sub-woofer module bolted on which makes it the 1.2. The sub-module is focused on the low bass region & part of the mid-bass region, crossing over at 65Hz, and YG use a 7.25" bass midrange to handle the remaining mid-bass, upper bass & midrange. And to these ears that's where the S5's come into their own. The S5's M380 carbon nano-tech midrange which utilizes a dual neodymium, underhung motor system with pure titanium voice coil former is the same midrange, albeit tuned to the S5, as the Q3 & is capable of midrange magic, especially on jazz voice. Here the Hailey's can't quite replicate the same luscious vocals, warmth or musicality as the S5's midrange in my view.
To me, midrange drivers should focused on the critical midband. The S5's crossover to the midrange at 200Hz and hand over to the tweeter at about 2kHz, meaning it is a true midrange driver, not bass midrange like the Hailey. The Hailey's drivers are certainly fast and very low distortion, and they do indeed sound well balanced, if a little lively. You can see and hear the money in them. However at the end of the day, the two speakers sound very different and are likely to appeal to equally divergent tastes. And there is also the small matter of a $10k price difference.