VST for positionnal sensing

[sixbras]

I looking for a software that handle positionnal sensing with my megadrum.
I plan to play on stage, no need for editing/compositing or advance mixing feature.

For this setup, is there a really big difference between SD2 and SD3 ?
I think Steven Slate Drum 4 also handle positionnal sensing... right ?

Any other (may be free) option ?

Thanks

[Stiletto]

Pretty sure that Addictive Drums 2 supports positional sensing with MegaDrum.