Ahh you and me both!
I have posted on this topic as well recently, with mixed views.
I currently use a Deben Max Pro with a 12V 7ah battery, and have been looking at updating to LED.
What I can gather is with the LED lamps once a red filter/diffuser is fitted the led wave length is reduced substantially.
However I have been doing some research and have come across a Thrunite Catapult V3, this I have been informed will produce a beam out to 100M with a red filter. This is not cheap at £120 for the lamp only (no battery, charger, pressure switch, filter or gun mount!)
So bundled up you are going to be looking at £225ish.