Raidmax, Coolmax, Apeiva NO!
Corsair, Seasonic, Antec, Pc Power & cooling, Enermax, XFX, some Thermaltake some OCZ and some Rosewill are good but your budget is in the way. It is better to have quality 450watt than a crappy 500watt. So what GPU are you using?
Antec 450watt http://pcpartpicker.com/part/antec-power-supply-vp450