Quite a bit costlier than Tri-P however.
The Triplanar has considerably harder bearings (hardest made anywhere in the world) and are thus the most durable; also having the least friction. However its not a $2K-$3K contender unless you find one used.
My findings are different from Doug's; IMO (using recordings I have recorded and released on LP as reference), the Triplanar is the more neutral arm for less money.