I like the viparspectra lights but the P series has a rep as not having a strong enough flowering skill. XS series has a better profile for flower and the new designed KS series has had great reviews so far. Spectrum is more in line with the xs series as well. looking forward to trying it out.

would be nice to have adjustable ranges so you can adjust levels according to needs, but then you might as well fork out the cash for something truly outstanding.