Wow, 35w seems a bit steep, maybe thats peanuts on the total power bill.
6 x 22 w = 132 w
Say a typical system is around 65w, add 35w for GFX board that is 65+35+132 = 232 w, not that bad when you know six screens are running I have to admit.
Ghosting etc... I don't know, this 7 year old 23" monitor is horrible in that regard, the previous 15" I had was even more terrible, but I did not notice ghosting etc in games, it is worse if you have a black background and move white windows, you can see the trails, so ghosting and refresh is horrible but IMHO that is an overrated factor.
Well if you are seriously considering buying 6 monitors of any size you could narrow it down to a top two or three to try then buy one of each before buying 5 more and sell/return the one(s) you don't like. It'd be way cheaper than getting 6 monitors you don't like and having to sell/return 6 at a time.
Just a quick data dive on newegg for common monitors with your desired resolution shows:
ASUS VH242H 23.6" 55W 1600 reviews
ASUS VW246H 24" 60W 1300 reviews
now lets look for ones with LED back light and displayPort as well.
ASUS VE258Q 25" 55W 60 reviews
Asus VK278Q 27" 45W 75 reviews
ASUS VE248Q 24" 35W 1 review
ASUS PA238Q 23" 33W 0 reviews
NEC EA232WMi 23" 37W 10 reviews
BenQ BL2400PU 24" 42W 0 reviews
HP LA2306x 23" 42W 0 reviews
That list makes it easy to grab the 24" at 35W or 23" at 33W as a big savings vs the 25" at 55W. Given the panel differences I'd take the VE over the PA but then I'm no expert, I'm just taking a quick stab at this from a scan of specs.http://www.amazon.com/Dell-Professional ... B002JNM3Q0
has 3 reviews for that Dell monitor so you can see the good and the bad of it. The most negative review is someone using it with a DVI-D connection mentioning poor color and vertical viewing angle. If you can put up with that x6 it's a very good deal in terms of energy usage. If that scares you off you should get a monitor in front of you and consider your options for return/exchange/refund etc when purchasing any monitor you are thinking of getting 6 of.
Of course all of that is based on 1920x1080 as being the only resolution I checked. Open up the options for other resolutions and there may be better choices.