HP iPAQ 510
MobilitySite reviews the iPAQ 510 Voice Messenger and writes, “Voice Messenger can best be described as a close cousin to Microsoft’s Voice Command. Voice Command offers more customizability–for example, I had previously configured Voice Command to read aloud high priority e-mails as they arrive on my Dash. Voice Messenger can only read e-mails when requested. On the other hand, so far I prefer Voice Messenger. I especially like the ability to reply to an email with an audio response…I’ve only had the IPAQ 510 for a few weeks, so there is a lot more experimentation/exploration to do. However, so far I am pleased with my decision.”

Link. Read more about the HP iPAQ 510 Voice Messenger. Looking for an unlocked HP iPAQ 510? eBay often has some great deals:

HP iPAQ 510 Voice Messenger (Unlocked)
US $155.00 (0 Bid)
End Date: Thursday Mar-18-2010 18:57:09 PDT
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HP iPAQ 510 Windows Mobile based PDA smartphone
US $70.00 (0 Bid)
End Date: Friday Mar-19-2010 13:15:22 PDT
Buy It Now for only: US $110.00
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HP iPAQ 510 Windows Mobile based PDA smartphone
US $70.00 (0 Bid)
End Date: Friday Mar-19-2010 13:15:25 PDT
Buy It Now for only: US $110.00
Bid now | Buy it now | Add to watch list

HP iPAQ 510 Windows Mobile based PDA smartphone
US $70.00 (0 Bid)
End Date: Friday Mar-19-2010 13:15:28 PDT
Buy It Now for only: US $110.00
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HP IPAQ 510 Camera UNLOCKED GSM smartphone + 1GB card
US $115.00
End Date: Sunday Mar-21-2010 11:03:32 PDT
Buy It Now for only: US $115.00
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iPAQ 510 Voice Messenger,smartphone,Cellphone,(RARE)
US $65.00
End Date: Wednesday Mar-24-2010 18:47:18 PDT
Buy It Now for only: US $65.00
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HP IPAQ 510 Camera UNLOCKED GSM phone + 2GB microSD
US $130.00
End Date: Thursday Mar-25-2010 17:30:43 PDT
Buy It Now for only: US $130.00
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Click here to see more unlocked iPAQ 510s at eBay.