I use elation platinum spot 5r's... I honestly haven't seen anything come close to its capabilities... but at nearly $2000 a head and their need for a lot of power (bad idea if you work in areas without multiple circuits). I've owned them since 2012... have 6 of em and still get people blown away by how capable they are. Videographers love them bc they have 2 different color whites... a cool white and warm white, so for those that prefer to shoot naturally, the warm white is best.
Ideally, if this is truly an investment, I would stay away from chinese lights... the optics and internals arent as good. I'd look for lights that have at least a 90w LED if you're not gonna do halogen bulbs. Have a warm white and cool white option, and a spot and frost effect (that forst/wash effect is very useful to me for moments during the dancing that don't require lights to be moving like slow dances, where i blanket the dancefloor in a blue or pink wash). Fast smooth movements are good to have especially if you play a lot of school or teen events with high energy club music.
In the LED spectrum, I believe chauvet came out with a light with all those capabilities for around $1000-1200 I believe.