Yeah, I'd try the Brinkman. I have a SunGun and IME it's only so-so for inspecting.
I have various LED lights (and most everything else except the Brinkman) and they're not all that great either.
I've had *ZERO* luck seeing light holograms with *any* artificial light. Severe holograms, yeah...but not the kind of faint ones that a decent rotary user might leave.