I'm not actually looking at watercooling right away but I do need a new case and plan to water cool soon (tm), so trying to keep that in mind whilst also trying to spend as little as possible 
So I've been looking and the two that seem to stick out are the Fractal Design Define R5 and the Phanteks Enthoo Pro M. The R5 has more radiator options it seems but the Enthoo Pro M still can do 2x 360 rads it seems, which I think should be more than enough?
For reference it's likely to be cooling a 4690K and a single GPU (currently got a 7990 but looking to replace that around/before going water cooled for a non-crossfire/sli setup), so even 2x 360 is likely overkill?
So is there a good reason to spend £30 more for the R5? And/or are there better options around?

So I've been looking and the two that seem to stick out are the Fractal Design Define R5 and the Phanteks Enthoo Pro M. The R5 has more radiator options it seems but the Enthoo Pro M still can do 2x 360 rads it seems, which I think should be more than enough?
For reference it's likely to be cooling a 4690K and a single GPU (currently got a 7990 but looking to replace that around/before going water cooled for a non-crossfire/sli setup), so even 2x 360 is likely overkill?
So is there a good reason to spend £30 more for the R5? And/or are there better options around?