id personally giv it a month n wait for the big january sales, thats what im doing. and keep an eye on currys, they bound to have another big sale. about a month ago they opened a mega store locally, n were floggin them 40" samsungs ur looking at for £274!!!
have a look at the LG range aswel, they make some nice tv's. toshiba have nice specs but terrible picture on standard def, phillips have really nice quality picture on all defnitions, but always cost a bit more, samsung are consistently good, but unless u buy the real up to date series 8 or woteva they up to, they no better than the sonys, and anythin bravia engined is a good performer, especially if its a 1080p model too
also, anythin bigger than a 40 and u really are into the territory of LCD vs plasma, but u wil really wana do ur research into all the options then