I own my MZ-N505 for about half a year and it's my first unit. I was unsatisfied with my remote (RM-MZ4R, the same that ikerCLon have mentioned), because I THOUGHT there was no group function on it and I was planning to buy Sony RM-MC11EL or Sony RM-MC12ELK. But a few weeks ago I have discovered that if I press the "DELETE" button for ~2 seconds, a group function is activated and then I can select group by presing fast forward/rewind buttons!! :laugh: Also, by pressing and holding "EDIT" button for ~2seconds you can enter the MENU (IMHO, it is almost useless unless remote has not a lcd display). The only button which is "a mystery" on my remote is a "T MARK" button. It should place a track mark, but it just isn't working: doesn't matter if you just press or hold it... Maybe it require some kind of combination of buttons...
So, the only bad thing about my RM-MZ4R remote is that it has not an LCD display, however it is quite tolerable for me. :cool:
And one question:
Is the Sony RM-MC33EL compatible with MZ-N505? Audiocubes says it is compatible with N707, and, in fact that these units are very similar, I thought that this remote could work with N505 too. Am I right?