A font with a mind of its own

I've just, very painfully, modified the Ashton Singers website (http://www.ashtonsingers.hampshire.org.uk/) to have a nice blue background and an even nicer logo (both courtesy of the choir's resident graphic designer) ... so far so very good ... and to use Garamond. Oh dear. Garamond is a lovely font for printing - I did the last concert programme in it & it looked miles more professional that any other programme I have ever done - but it really doesn't work well on the screen, especially in small sizes - I think this is partly because the letters are made of very thin strokes. The actual size doesn't seem to go up linearly with the point size. The italic is very small and very narrow (unless you apply bold to it, when it suddenly becomes enormous). All very strange.