Thank you very much for your helpful suggestions!
pdf995 is a fine product, good quality and works nice, but it displays advertising each time the software is opened... and CutePDF looks like needs additional software to download and install ( GhostScript ).
I also found
PDF Factory Pro and
PDF Writer Pro which look very good.. the first one looks like a very popular software and the other has very good compression for the same quality.. I will consider buying one of the two... Thank you again!