Best texture file format?

[elias4444]

I've noticed some debate on this subject in other threads, so I'd like to figure out once and for all, what's the best file format to store your textures in? PNG? JPG (although, I like to stay clear of lossy formats)? TGA? Something else?

[Matzon]

The answer depends on what you are looking for. Small filesize? Easy decompression? Low memory overhead? Accessible toolkits? etc etc.

I am sure that Onyx(must only use one name!) has a good summary