Best LED Spot lighting for 4/5ft?

[doom_freak]

I am looking at either a 120cm or 150cm tank, both around 55cm depth.

I quite like the ripple effect that spotlights can provide - but can anyone recommend a particular setup for a tank this wide?
I also plan to use CO2 and a medium density planting regime.

I know that simple LED floodlights bought off Amazo