machine heads

[redname]

hi, need some recommendations for machine heads for my acoustic, they r losing tune liao so i guess its time to change. heard of groover (sorry, dnt know how to spell). how much r those? place to get?

 

[Lifehouse]

Can get from Maestro Guitars at Excelsior. Locking tuners are available as well. I've them on my Taylor 814. Fantastic at keeping tune.