You use Photoshop don't you Grim?...an example of properties of one of your thumbs from the gallery before and after save for the web...of course this image was saved again (at Quality: 8 high)...compressing it one more time...but on my screen (prior to resaving...and now) I was hard pressed to see too much difference in the before and after thumbs Grim...
but check out the difference in file size. I don't know the compressed file looks ok to me...
:-)>