Now that I have the player/headphone setup I wanted I think it's time to set up my library a little better. A big chunk (probably 80%) of these are in Flac files.
My question is would it be worth my time to unpack those into wav files before converting to a lossy format? Or will it be just as good going straight from flac to lossy?
Also I have not decided on mp3, aac or ogg, so if any of these poses a significant advantage I'm not aware of, let me know. I'm a bit new to all this.

My preferred software is MusicBee if that makes any difference.