There Is Some LE-UV, H-UV, LED-UV Info Further Down The Forum I Did Some Testing Three Years Ago I Am Informed That The Ink Has Been Changed Since Then As Certain Things It Contained Then Are No Longer Aloud To Be Used Which I Have Been Advised Has Caused An Increase In Drying Issues On Coated Stock (I Have Not Done Any Testing Since Then So Can Not Confirm That Is The Case).
In Brief It Changes Everything 180 Degrees Solves Your Drying Problems On Uncoated Stocks But You Get Problems On Coated Stocks That You Wouldn't Have With Stock Being Coated Or Normal UV.
You Need Have A Need For It To Get An Roi, ie Alot Of Your Work Needs To Be On Unstable Stock To Justify It Rather Than Getting It To Solve A Problem On Job You Have Drying Problems With Once A Week!
Other Things To Note The Lamps On H-UV/LE-UV/Normal UV Have Mercury And They Are At Present Under The Microscope As To Disposal, So There Is Push Towards LED-UV Even More So If They Can Increase The Lamp Life.
Then You Also Have The Normal UV Problems Blanket Embossing,Ink Fly,Misting, Ink Life Etc,
You Really Need To Under Take Your Own Testing To See If It Suits Your Requirements.