If you're using your VA at home I'd suggest any simple stylus you can buy at a local WalMart, Radio Shack, and other department stores (would be found in the electronics department). They're also inexpensive. The one I bought was large (size of a ball point writing pen). It as that large because it was a combination ball point pen and stylus. If you prefer the smaller PDA stylus you can get that as well.
Now if you're playing out somewhere I wouldn't suggest the stylus. It will slow you down when it comes to making changes on the fly. Reason is if you're playing live and you select something on the screen with the stylus you have to put the stylus down before you can resume playing with both hands. Very cumbersome and time consuming when needing to make changes on the fly.
Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.