Dear friends: It is almost imposible to compare precisely two or more tonearms performance because there are some inherent parameters on each one, example: internal wiring, effective mass, dinamically or statically balanced, pivot or linear traking, etc..., that has an effect on the final judgement. The Larry's comparison between the 2.2 and the Reference can tell us that the Larry's cartridge mates better with the reference than with the 2.2 or can tell us that the reference is a better tonearm or that Larry likes more the " reference distortions " than the " 2.2 distortions "..
There is no a " perfect tonearm ", pivot or linear one. All of them has advantages and disadvantages and depend with which cartridge we mate it.
My advise is to have very clear our targets on the music reproduction, what we want on the sound reproduction, which are our priorities and we have to organize those priorities by importance ( to us ), we have to graded ( scale ), example:
1- timbre,
2- tonal balance,
3- frecuency response,
4- dynamic balance,
5- inner detail,
6- attack,
7- soundstage,
8- etc,...
First that compare between two tonearms we have to compare each one against our music reproduction priorities and then we can choose the best tonearm/cartridge for us.
I have " live experience " ( in my audio system ) with linear traking tonearms: Dennesen and ET, and I hear the Rockport and Air Tangent ( I never hear the Kuzma ), with all of them you can have a different music sound reproduction experience against any pivot tonearm especially with the soundstage presentation and a kind of transparency that is unique to the linear tonearm, but these don't say that these linear traking tonearms are better than any pivot tonearm. Otherwise these linear traking tonearms are not my cup of tea ( because my music priorities ), they are very good but not exellent at the frecuency extremes, these are not their heavy characteristics. BTW, the Reference is exellent whit the soundstage presentation and ,I agree with Thomas, not very good at the frecuency extremes.
I never hear the Phantom, so I can say nothing about. I hope that this time this tonearm was a terminated design, not like his brother: 1, 1.5, 2, 2.2,....
I don't trust in an unfinished design like Graham and Triplanar ( I'm not saying that these tonearms are bad tonearms. No, I know they are good ones . ). Why I don't trust: well, the designers of those tonearms really don't have the 100% of know-how about all the differents tasks that any tonearm has to do or they don't test perfectly their prototypes before they put on sale. Both put on sale unfinished designs, the Triplanar is on his VII update and the Graham is on his V update ( including the Phantom ).
Take a look to the others tonearms designers like: SME, Breuer, Brhinkman, Audiocraft, Rockport, Moerch, Micro Seiki, SAEC, Dynavector, Ikeda, Satin, Technics, etc.... You never " see " a SME V MK2 or a Moerch DP-6 MK3. That's why all these tonearms are top performers and waiting for the right cartridges according to your music sound reproduction priorities.
So, define your music targets ( graded priorities ) and then make your choose.
Regards and enjoy the music.
Raul.