HD upgrade worth it?

At the moment i play my PS3 on a SDTV and its fine but with some more high profile games coming out like MGSIV and GT5: P im thinking if it is worth upgradig to a HD Tv, my main concern is that it would only be a 19" screen, would i see a big difference from SD on a 19" HD screen?

Also would i need to buy any extra cables?

It costs £179.99
http://www.comet.co.uk/shopcomet/product/434426/PROLINE-LD1915D

DEFINATELY!!

went from 30"sdtv to 46"hdtv with 1080p 1500:1 and it is so much better its too hard to describe. get an hdmi cable.