MSI R7870 Twin Frozr or Radeon HD7870 Dual-X

Hey fellow teks,

I was wondering, I have a HD7850 Dual-X installed right now (Love it!) and I feel like upgrading. I went to some sites and found out that the best results in my budget ($230) are the MSI and the Sapphire. 

But I can't choose which one, can you help me out? Can you please give  some arguments like: Performance, Cooling and overclocking for example.

My PC specs:

CPU: AMD Black Edition 3.8GHZ (OC)

PSI: Corsair Builder Series CX600 V2

Motherboard: MSI 970A-G46

RAM:  Corsair vengeance 8GB

Thank you very much, If you need more information about my PC just ask.

You might be able to run 2 7850's in Crossfire depending on how many hardrives ect.. you have, or even run the 7870 & 7850 in crossfire (dont know how much of a headache that could be though) as the 7870 isnt that big of an upgrade from a 7850

The problem is I don't have the space for a crossfire. It was a idea 'till i realized it was impossible to fit in the second GPU. (I have a small case). But would you recommened the MSI or the Sapphire?