If you really like them and deny everything that other companies make then yea.
But if you like them and also have respect for other products then no.
Simple as that.
I own a Razer mouse/keyboard/ and headset as well. The keyboard died in less then a year Razer gave me a new one. Then the mouse died after 1.5 years I bought another naga. The only reason I buy Razer is because I can't find Logitech around here.