It is personal preference. Unfortunately for me, I had to buy a numerous mix of lighting until I found what I was looking for. For my Geo tank, I use a 48" Beamworks LED for Freshwater. They make the blues pop, which was what I was going for. For my Umbee's, I have a 36" Marineland Double Bright on a 60" tank. I love the subdued look while spotlighting the center of the tank. Exactly what I was looking for.
It's definitely personal preference. One guys washed out, would-be full spectrum is another guys limelight.
I will add however, that I refuse to pay full price on the LEDs. I got really good deals on last years Black Friday Sale and this years Cyber Monday sales. Nearly 50% off of retail.