To add another wrinkle to the mix, have you considered adding an Inon Z240 strobe instead of another Ikelite?
I'd skip this wrinkle even if it were possible, which it isn't on an Ikelite housing, other than as a slave.
Now you have two types of batteries to charge. You would also have strobes with different color temperatures. It may allow one more lighting possibilities, but there is a cost to it in ease of use.
I almost forgot, conventional wisdom is to get a DS160. When faced with a similar choice, I chose the DS125.
Whichever you choose, don't fret over the decision. If after a year you feel like you made the wrong decision, you still won't lose any sleep over it. It's not like the condo in Destin my buddy decided to buy two years ago.
Edited by scorpio_fish, 27 February 2009 - 10:48 AM.