LED

[asylumdown]

Also you can pick up used radion Gen 1s for around 300-350/unit I think these days. I've got 8 of those on my tank and they've done me right, you can check out the last few pages of my build thread if you want to see what 18 months of them will do.

There's lots of options, options that expand drastically if you're willing to shop around for second hand merch.