Over a year ago I was running a Triplanar mounted on a AC 1 with a Transfiguration Orpheus cart. I was contemplating a second arm and the toss up was between a Phantom and a Durand Talea. To cut a long story short I ended up with the Talea and found that it was such a perfect fit in my system and with my musical priorities that I got rid of the Triplanar. Am extremely happy and satisfied with the Talea and would recommend an audition though it's a bit more expensive than the arms you are contemplating.
Cheers
Pradeep
Cheers
Pradeep