P180b + DS3R + E6750 = HSF?

[Techx]

Sup guys, I have a Ds3r & e6750 on the way and am going to install in a p180b. If anyone has any experience with this combo can you please recommend me a good performance / decent priced heatsink that will FIT with no issues into that case. I have read a lot of threads in here and still am not sure which to go with, TR120? tuniq? scythe? And yes, I would like to do a modest overclock, nothing extreme though, and would prefer a 120mm fan.

Thanks in advance