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After random shut downs with no pattern I have decided that my budget PSU may not be good enough to run my rig. See sig for details 
So I have narrowed it down to these so please give me your thoughts.
Tagan TG580-U15 580W ATX2.01 Easycon SLi Compliant Modular Silent PSU (CA-009-TG) £91.59
Seasonic S12 600W Silent ATX2.0 Power Supply (CA-002-SS) £103.34
Hiper HPU-4K580-MK Type R 580W Modular ATX2.2 PSU - Black UV (CA-005-HP) £62.22
Enermax Liberty 620W ELT620AWT ATX2.2 Modular SLI Compliant PSU (CA-024-EN) £105.69
So I have narrowed it down to these so please give me your thoughts.
Tagan TG580-U15 580W ATX2.01 Easycon SLi Compliant Modular Silent PSU (CA-009-TG) £91.59
Seasonic S12 600W Silent ATX2.0 Power Supply (CA-002-SS) £103.34
Hiper HPU-4K580-MK Type R 580W Modular ATX2.2 PSU - Black UV (CA-005-HP) £62.22
Enermax Liberty 620W ELT620AWT ATX2.2 Modular SLI Compliant PSU (CA-024-EN) £105.69