Does the new Deathadder use Synapse 2.0 to setup the buttons and alter the cursor speed? If so, are you ok with being datamined?
If you like the Ikari's shape, there aren't many other mice that really share its properties for a palm gripper (assuming that you are since you're using the Ikari).
That mouse is about as close to the Ikari's shape as anything on the market, and has some fan support from its owners. I'm not sure that sweaty hands come into play as much as marketing would like to make it seem, and the reason I say that is that different companies have different ways of combating it. Some companies push rubberized products for the "grippiness", other companies push glossy products since sweaty hands will actually adhere better to a glossy mouse during use and provide better grip than someone with dry hands. Honestly, if you've had sweaty hands your whole life, you're probably pretty damned used to how to use them. There is no perfect solution, rubberized surfaces on mice often get slick when wet, glossy surfaces can feel sticky when your hand is moist. Neither will ever resolve the actual issue of your sweaty hands.
The only other thing I would mention is that the Steelseries Sensei (including raw) has hardware level acceleration that software has not been able to breed out of it, making it a sub-optimal choice for most Counterstrike players. If you like the shape of the Sensei, look at http://www.zowiegear.com/component/c...dextrous-mouse
which has a similar shape to the Sensei but a much better sensor for playing Counterstrike or Quake.
Another mouse that is close in shape to the Ikari is the Feenix Nascita, however I wouldn't recommend it since it is literally just a Sharkoon DarkGlider with a 50 dollar price increase (one of the funnier gaming ripoffs as of late).