Pre iOS 6 I didn't use Siri all that much (probably due to having limited functionality in the UK) but I vastly preferred the female voice of the US setting to the male voice of the UK. Now I'm using it more frequently I've realised that the voice setting not only governs the read-back but the recognition side too - probably common knowledge but I've obviously not been paying attention. As such, I've found using the US voice greatly degrades Siri's accuracy compared to using the UK one. For example, under the US setting Siri refuses to recognise the word "quay", using "key" instead which throws off any searches, routes etc. Anyone know if there's a way to select a voice for read back only and keep the underlaying location setting for recognition? I'm sure I'm not the only one who prefers and uses a different voice, it'd be interesting to see if those complaining about Siri misunderstanding had fallen into this trap too... Also, since Apple uses all those siri interactions to improve/update their natural language algorithms wouldn't people using the "wrong" voice introduce errors? Or is apple smart enough to filter users by geography too?