Which highlight to go with?

Hello everyone, first post here. DE been a interest of mine for a while, so decided to jump in. Decided to do the main armour plates of my army black/obsidian (this isn't quite it, just a quick drybrush...gonna be more layers) but I've run into trouble picking my highlight.

I was hoping you lovely nefarious people could offer some advice or opinions?
(sorry if this is the wrong place)

Anyway, here are the 4 highlights I've looked at. Blue, orange, purple, white. I'm trying to stay away from green (gw scheme) but I could also always do a 50/50 scheme with any of these. The highlighting on the purple is a bit lacking, but once corrected will be like the blue/orange.

Which do you think works best?
Thanks

They all look good, honestly. I'd say the grey/white is less common than the others, probably because it's more subtle.

I really like the one in the top left. They're all well executed, so whichever one is chosen should be good. I'm also a fan of the bottom right, seems luminous.

Yeah I love the glow you've got with the blue, its almost ethereal somehow!

I'll second that. The blue is looking great. The others too but the blue isn't very common. The red might be common and the white a tad too subtle. The remaining two might look great!

I'm going to be awkward at first, and say both the red and blue.
Then I'm going to be more awkward and controversial and say that I quite like how they stand next to each other. I say both.

Well, I've decided to go with blue for the whole Tron look. gonna see how it goes, post a picture up, and see where to go from there

And Squid...a fair few people were actually saying that. I believe out of all groups/forums, it was blue-->blue/orange-->purple-->orange-->white