Best for lag, TV or projector.

Hi,

Ive had my lg 47lw55t for a few months now and am really pleased with it.
But, after fixing my YLOD on my ps3 and setting it up to the TV the input lag(over 100 ms) is so infuriating specially for BF3.
So my dilema is what to do about it as i dont want to be stuck in the bedroom playing again.

A new TV is out of the question as i like being married lol.

So will a projector in addition be a good way of faster gaming?
Have been looking in general at benQ epson and pannys at the £1500 mark but am i wasting my time?

So if any fellow gamers have tried the bis screen options pleas advise.

Thanx
stu