I am looking to buy a RPTV but don't know whether to go for 100Hz or 50Hz. I had a Hitachi 32" with 100Hz/Progressive Scan but didn't think it was much of a difference from an ordinary 50Hz set. But are RP different? Does 100Hz make a noticeable difference for the price as it is over £300 more than the 50Hz model? The sets I am comparing are the Toshiba 42WH18B and Toshiba 42WP23P.