A good LCDtv for close to £500?

[turtle3]

Hi all, looking fo an lcd tv hopefully with both a dvi and vga input so I can hook up my 360 and pc as a secondary display also, There was a thread a while back showing a sammy tv set up similar to what i want (the one in the 360 pods) and they had a pic of bf2 being payed on it.. but im getting a bit confused with all the different model numbers.

Theres this one: Samsung LE27T51BX for £550, speakers are on side.
this one: Samsung LE26R41BX which is smaller but dearer? at £600
and this one: Samsung LE26R41BDX £650

I dont have a clue what the difference is, all I can notice visually is that the top one has the speakers either side of the set rather than below like the others.. As well as these sets I have seen this rather tempting 27'' screen below for only £500 elivered which seems to have a wealth of connections, ive never heard of the make before though what do you think, dodgy or ok,

Diboss LT27KLF

27" Widescreen LCD TV
Resolution: WXGA (1280 x 720)
Built in Tuner
Built in speakers (2 x 10W)
Nicam stereo sound
Brightness: 550 cd/m2
600:1 contrast ratio
170 / 170 degree viewing angle
Teletext with 10 page memory
PIP/DW/Scan (PC/TV),
Digital 4H Comb Filter
Sleep Timer
FM Radio
DVI-IN, DVD-IN/Scart, AV-IN & OUT, S-VIDEO IN, DSub-IN (PC)
Headphone out

thanks