which double saber should I try to get?

[A.S.]

Well I recommend using normal double sabre or Twin Brand or Stag Cutlery (males only). Finding rear doubles are good but its no fun using rear which makes the game too easy ( unless you are lvl 80 might as well use it to gain EXP)
But is Double Cannon is not illegal now? ( havnt update myself for a long time) I know Lavis cannon and Lavis Blades are legal but Double Cannon? That has too be super rear ( not for Japs cos rears are nothing to them)

XD, ST could care less about the illegal obscenities of PSO!

I see everyone neglected the Partisan of Lightning, I know it isn't great, but are there any advantages, it's quite hard to find compared to Demo Comet or Meteor Cudgel.