What GPU to buy for 300-400$ canadian

Alazzer

Reputable
Jul 12, 2014
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4,510
My system is a:
Corsair Vengeance 70 case
Asus Maximus Hero 7 Motherboard
i5 4670k 3.4 Processor
Cooler Master RS-650-PCAR-E3 (current power supply with or after GPU) non module
1333 samsung x 4 @ 2gb (current ram Last to be updated maybe even a SSD before)
Seagate Barricude 2tb
XFX HD 5770 ATI card (current card next to be replaced)

R9 280X Is what I was thinking on I wanted to know if this was the right card to buy now and if so any brands besides sapphire suppose to be great?