WANTED bright white leds for table lamp

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Please help me!
I am currently designing a 4,5 volt 5.4 amp battery operated dining table lamp using 2 white LEDs 3.6 v 20 mAmp (5 mm), however I am unfamiliar with the manufacturers of the best LEDs and I am a little lost.

Can anyone recomend me a white LED which is not too blue or purpleish and which gives a good luminosity (the beam of the LED is directed on to the table) and where I get hold of them?

Thanks