If you want to do symphonic stuff, SRX-06 will blow your mind. I'm sure visionaire is right that the dedicated string board is better for strings, but SRX-06 has amazing strings too. Check out the samples visionaire posted, and If you want to hear more of the SRX-06 strings, check out my song "Almost Home" (link below) everything on that but the piano is SRX-06. Good luck.
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Music by Sanus Ex Nihilo
Fantom X6 (Max RAM, SRX-06) | Boss Powered Monitors (Absolute Junk)
Roland R5 Rhythm Programmer (Classic!)
Korg M1 (Way Classic) | Fender A.D. Strat HSS
Digitech GNX4 Guitar Workstation
Acid 4.0 | FL Studio 5.0
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Music by Sanus Ex Nihilo
Fantom X6 (Max RAM, SRX-06, SRX-03) | Boss Powered Monitors (Absolute Junk)
Roland R5 Rhythm Programmer (Classic!)
Korg M1 (Way Classic) | Fender A.D. Strat HSS
Digitech GNX4 Guitar Workstation
Acid 4.0 | FL Studio 5.0