bought my sister a tomtom as shes shite at directions,,, now i wanna add some voices to it but the one ive bought is ,,,, well its fucking shite !!!

id like some sort of gay voice, also a "only fools and horses" voice but the one i bought online,, well i sound more like fucking del boy than this does

any ideas from people who actually have them as the sites seem to show a good voice,, then the tomtom seems to be different