How does the performance and build of the Panasonic S75 compare with more modern players? Do later Panny players better it? e.g. those using higher clocked/higher bit Video DACs, such as S49 (108Mhz/12bit) or S97 (216Mhz/11 bit). My dealer still has stock of the S75, but also has S49 - ummm??? S75 owners or formers S75 owners - advice please!