Time to choose: Baerwald, Lofgren, Stevenson ?

Interesting the debate over the 3 main alignment curves, how most can detect differences in tracking errors depending where on the lp one is tracking and everyone has a favourite alignment.  Mine is Stevenson as it sounds better/cleaner than the other two on the last 3rd or any lp.

I recently got a Thales Simplicty II tonearm and the maximun tracking error is 0.0006. far less than any of the 3 other alignment’s. You can hear its superiority, more than any other tonearm I have heard, you can’t tell where on the record the stylus is, the music is clear and just sounds right. So far there is no downside in my listening.

We have Kuzma, Trans-Fi , Ckearaudio and Bergmann that have traditional linear tracking - some say with drawbacks.
We now have pivoted tangential tracking with Thales and Schroder.

Tangetial tracking is what most audiophiles should be aspiring to right? You no longer have to worry about what alignment sounds the best compromise.

downunder

Tangetial tracking is what most audiophiles should be aspiring to right?

Not necessarily. Tangential trackers introduce their own set of problems including higher friction and noisy fiddly air pumps, depending on the arm, of course. Other so-called tangential trackers rely on a servo to maintain tangency, so there is periodic deviation from tangency as the servo "hunts" to correct it. Some audiophiles consider most linear trackers to be a cure worse than the disease.

Downunder, I don't think we're really "debating" the 3 curves so much as we are talking about what curve is optimal for what tonearms and why.  I recently got very interested in tonearms that have zero headshell offset angle and are designed to be mounted with "underhang", which is to say that the stylus tip does not overhang the spindle; instead it is set short of the spindle such that the tip is on the playing surface when the tonearm is pointed at the spindle.  With such tonearms, of which there are only two I think, tangency to the groove is achieved at only one point on the surface of the LP, not two, and the most extreme tracking angle error can reach or approach as much as 10 degrees, at the most inner and outer grooves.  (But it's more typically 5 to 8 degrees at worst.) BUT, on the other hand, there is zero skating force at that one null point.  

What to do with this information?  I have long owned an RS Labs RS-A1 tonearm, which is one of the two commercially available arms that use underhung mounting, that I know about.  I always wondered why it sounded so good, despite its other rather gimmicky features.  Then more recently, the Viv Rigid Float tonearm came on the market, which also uses underhang.  The Viv company likes to talk about their floating bearing, of which I am a bit skeptical, but the arm gets great reviews and is revered in Japan and Europe.  I think the reason that the Viv and the RS Labs may punch "above their weight" may be that the skating force produced by headshell offset is more noxious than the skating force that arises due to lack of tangency before and after the null point(s) for any pivoted tonearm.  And by extension this suggests that our obsession with minimizing degrees of tracking angle error via headshell offset is possibly unwise.

Does anyone own a Schroeder LT?  I rather like that one.

Since downunder raised the point of alternatives to the "big 3" for alignment, I'll further muddy the waters by suggesting yet another.

This one comes from Allen Wright's site for vacuumstate.  I happen to own one of his JLTi phono stages, but that's another story.  He attributes this alternative alignment to someone named Rowan McCombe who he calls "The Guru".  I've traditionally utilized Baerwald but currently have The Guru alignment and enjoy it's musicality without any hint of distortion.

http://www.vacuumstate.com/fileupload/GuruSetUp.pdf

Dear @chakster : The 7045 is good tonearm and he 170 is very good tracker and this cartridge characteristics means that with or with out Stevenson alignment it will ride perfectly the inner grooves .

Again, your music/sound priorities are very personal and you have to use what fits it and that's all.

Regards and enjoy the music,
R.