With the small budget of yours, your options are quite limited.
I suggest going for Seasonic unit. Either S12II-620, M12II-620 EVO or G-650. Though, the best would be PRIME 650.
pcpp: http://uk.pcpartpicker.com/products/compare/nB3RsY,Tc3RsY,R7V48d,nn648d/
S12II-620 is 80+ Bronze with fully wired cables. It gives you nice headache in cable management. (I have S12II-520 powering my AMD build.)
M12II-620 EVO is 80+ Bronze with fully modular cables. It's great for cable management. (I have M12II-850 EVO powering my Haswell build.)
G-650 is 80+ Gold with semi-modular cables. It has better efficiency than the two above while still having good cable management.
PRIME 650 is 80+ Titanium with fully modular cables. It is the best 650W PSU that money can buy at current date. (I have PRIME 650 powering my Skylake build with i5-6600K, full specs in my sig.)
Review of PRIME 650:
http://www.tomshardware.com/reviews/seasonic-prime-titanium-650w-psu,4690.html
S12II, M12II EVO and G series PSUs are of good quality (Tier two) PSUs while PRIME is of great quality (Tier one) PSU.
PSU Tier list: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html