Bachus,
vArranger does need the SD2 unit to really shine. I have been using it now for about 6 months and really like how easy it is to use and setup songs for gigs.

So far I have found it plays just about any of the early Yamaha styles - PSR - T3. Dan is working now on adding Roland compatibility.

I have no experience with Live Styler so I can't compare the two.

The best thing about vArranger is the awesome support Dan provides. For instance, yesterday he spent over an hour with me via the internet helping me setup my midi controller keyboard so I can control vArranger from the keyboard - I am a midi newbie. Oh yes, there is never a charge for his help. What other vendor does this?

Deane