Hey Jay,
I've kinda stayed out of this since I believe you know my feelings regarding this (I think your money would be better spent upgrading).
I recently upgraded to the Flux Magnetics 1/2 track head so here are my impressions.
At 15 ips (which these heads are designed for) the bass is more textured and defined. The midrange is more detailed sounding from what I attribute to the lack of overhang by the bass. I find the differences to be most obvious with music with lots of bass content.
The high frequencies are very close to what I heard with the stock Technics head but I considered them to be just about unbeatable when properly adjusted. They may be a tad more open but I can't really say for sure.
Overall, I'm really pleased with the new head. If you're getting your tape path modified, I think at the price of adding the head, it's a no brainer. Maybe if it was $2k (like most mid rated phono cartridges) it would be something you'd need to consider carefully.
Bear in mind that these impressions are also the result of weeks of tweaking everything (tensions, pinch rollers, head adjustments, guide adjustments etc.). But, I am the poster boy for endless tweaking and I realize that this sort of activity is not realistic for most folks. But, that's one of the great benefits to having Doc work on your machine. The tweaking comes with the mods.
