I've just discovered that the HD Voice days update that you would have seen, is actually TTS done by SVOX!
I purchased SVOX, and for the UK be l voice at least, it's "exactly!" The same, same voice, same tone, same inflection used within the speech.
Not bad considering its a free addition
Current Device: Model: Samsung Galaxy Note II, Galaxy Note 10.1 GT-N8000 & GT-N5100, & Galaxy Camera EK-GC100
Retired but still own: Samsung Galaxy Note GT-N7000 - Dell Streak - HTC Touch Pro 2,
and HTC Kaiser - MDA Vario III
Used to own:Galaxy Tab 10.1 GT-P7500 - Samsung Galaxy SII - HTC Desire
- HTC Hermes (MDA Vario II) - Raphael - HTC Touch Pro
HTC Wizard (MDA Vario)
- O2 XDA IIi
- HTC Magician (MDA Compact)