This board has been asked this very same question many times over the past few months, and the response is always - get the Hitatchi. I think for any serious gamer 16ms response is a must.
However, I wanted something taht would match my system, and imho the Hitatchi looked ugly - and didnt fit. There were a few Acer models that did - but availability was non-existant.
What did I do? Well, I decided to buy a Iiyama Visionmaster 1451 - only £140, great quality 19" CRT. I'll wait another 12-24 months to see what pans out with LCDs that I like - things can only get better, or prices lower 😉 After all, even the best LCDs still don't seem to me to be suited to gaming yet - just check out things such as motion blur and all that malarky in these boards.