600w dual arc bulb....should I?

Do they work? are they worth it? same size harvest as a 600w hps or close? If im not getting a bigger harvest or atleast helthier/more potent bubs whats the point.

So whats the deal...is it a deal? hahahaha im stoned

http://www.dchydro.com/product/2845/600-HPS-MDHYDRO-HO/

sorry the website was fucked up...ignore this

so a 3 years old thread, did you ever try that dual arc bulb and if so are they wort anything ? my concerns is light penetrations, is it like running a 600W or a 400/200W ?

hope your still active ?