Over 40"... plasma looks better with *** media. IE, DSTV SD, DVD's etc.
Around and under the 40" zone, LCD is the way forward.
That's my opinion at least... You're not ONLY going to watch Blu-Rays ALL THE TIME with your huge LED screen... and a DSTV SD picture looks SHOCKING on such a big LCD. I have a 40" LCD at home and I can't bear to watch TV on it. Even DVDs look "weird". With their 700 000 00 gazillion contrast ratios, the dark spots look like there's aliens waiting to pounce out of the blackness...
Plasmas are a little more forgiving to crappy input quality at larger sizes.
A mate of mine has a 45" plasma and his DSTV picture is WAY better than my 40" LCD... it's softer around the edges of the pixels and it hazes the blockiness into each other as opposed to the stark contrast of the LCDs.
I always tell people to remember that they're gonna wanna watch EVERYTHING on the screen, not just HD content... it makes the bigger screens a little bit more difficult to live with.
*cough cough*
Saying that, I have 6 pairs of curtains to close before I watch TV... LOL!
But the projector is a lot more forgiving to *** input quality too...
EDIT:
The room is temporary - I'm 'renovating' another room for my media purposes, floor will either be carpeted or wooden.
I've actually been advised to try two Jamo Sub 300's in the new room
Yeh - I H-A-T-E going to cinema's now - I watched Alice in Wonderland the other day in HiDef - and WOW....
But I really want a HD projector for a BIIIIG screen experience.
Dude... I've heard those fronts together with the Polk sub... funnily enough with the 200w Onkyo amp
The MTM arangement of the Polks give the Polk fronts a fantastic mid and treble range and sound (you'll notice I went for the same design when I made my center speaker cabinets)... They were always a bit lean on the bass. Which is why the RTi 9's have 3 woofers!
However... those puppies just can't move enough air to give that full bass needed for movies. (hardly any front speakers can... unless they're powered)
The polk sub goes well with those fronts... it can go INSANELY loud without distorting and it doesn't "flubber" at lower freqs. (please note, flubber is my own terminology)
Jamo isn't bad... but I've always preferred Polk for AV stuff
Careful that the dudes at the shop aren't trying to get you to buy stuff just coz they get it at better rates or something like that... I've found sound salesmen to be on the same level as used car salesmen and lawyers.
Rather listen for yourself and make a decision on what YOU prefer.
This review sums it up pretty well... and the dude used the same sub I'm taking about.
http://www.hometheatermag.com/floorloudspeakers/890polkrti/