Hoya close-up filters

[NorthstaNder]

I'm toying with the idea of getting some 1x, 2x & 4x close-up filters for my S6500fd.

Are these filters any good or will they degrade the image quality too much to be worthwhile?

 

[NorthstaNder]

I'm not sure, so I'll assume 1 element. The only other thing I can find out about them is that I should use a small aperture with them.