The Switch 810 or the Stryker...
If when you say it needs to support a 240 rad, and you just mean a H100 then the Corsair 500R or 600T as well. I wouldn't recommend either for full water cooling mind.... Might want to look at the C70 as well, although I need to do more research before I start recommending that really...
The 810 is the better for watercooling, the Stryker the better for air cooling, but both will do the job.
kd