Hi all, this is my first post, so be gentle . I'm after a hard case for my Yamaha RBX170. I'm using a gig bag at the moment but want to buy a hard case, preferably not shaped (i.e. I want a rectangular case). Can you guys help out? What should look at? Can anyone recommend a case, or should I just go down to the music shop and try a few differ4ent cases to find the best fit? Cheers.