in terms of PAR, the BLV 14k gives a higher rating and the color is crisp white. As for Phoenix 14k, it produces slightly lower PAR but it produce a nice color tint (white with tint of blue). you can opt not to use any suppliment if you use the Phoenix bulb.
As for BLV 14k, suppliment with T5 is a must as if its runs solo, it is to white....
my 2 cents