WRGB II 10th Anniversary Edition vs. WRGB II Slim

[CiggyTardust]

I can purchase both lights at the same price - the Slim is better for my tank (45 x 28 x 28cm) and the WRGB II 10th Edition will be overpowered. I can turn down the power on this light but wanted to know - is there any other advantage of the WRGB II over the Slim? In color rendition or settings or anything else? Considering they are the same price for me, I'm not sure if I should go for the more powerful light even though I won't use the extra power.