VPI TNT HRX table - what tonearms?

I just bought, but have not yet picked up, a VPI TNT HRX turntable, which comes with a VPI JMW 12.5 tonearm. I also have a Graham 2.2 arm and a SME IV arm. Assuming I had the proper armboards, would either of these be superior to the JMW? Would other tonearms be superior to the JMW with this table?
Suttlaw