In the old days, two alternatives to the Ittok for use on the Linn table were the Sumiko MDC-800 (a/k/a The Arm), and the Zeta (made in the UK). Both are now somewhat hard to find. Both feature very robust arm tubes and excellent bearing assemblies.
For currently-available arms I would look into the Kuzma Stogi Ref, occasionally available used for around $1500.