Any riva users out there? 
I started with an m401 - which lasted 2 weeks. Then switched to an m201. I've had it for about 3 month and the batteries are totally finito! I'm thinking of trying out the riva. Does anyone have opinions/experiences they could share on it?
I started with an m401 - which lasted 2 weeks. Then switched to an m201. I've had it for about 3 month and the batteries are totally finito! I'm thinking of trying out the riva. Does anyone have opinions/experiences they could share on it?