Is 5800K the perfect color temp? How low of a CRI is acceptable? How much of a tradeoff should one make of one over the other? Would one choose a 5200K with a 88CRI over a 4800K with a 92CRI bulb? Is there a bulb better than the Osram HQI-TS 400W with a 5200K and CRI of 93 and 36,000 Lumens that http://www.exclusiv-online.com is selling?