Tosh 82ZD16B going back- looking at the Sony KV32LS35/KV32FX65

Hi there, I currently have had 2 of the Toshiba 82ZD16B. Its going back due to picture and sound problems. I was looking at getting either the Sony KV32LS35 or the Sony KV32FX65 (The sad stand on the KV32FX65 doesnt matter much as I can get hold of the 32DX40 stand.) Is there much difference in picture quality between the 50hz and the 100hz on these two sets. I want it for dvd and to be able to watch my OnDigi as well. 100hz looks really bad on normal telly imo, so im tending to lean towards the KV32LS35. Any thoughts on which model I should go for?? BTW isnt buying a telly supposed to be fun??