Hi there, a newbie to CPF here,
I have recentlly progressed from a Petzel tikka xp to a Led Lenser H7R and i use my light in roof cavities under floors and whilste servicing equipment. I am finding it about 3 to 4 times brighter. I only hope it is as reliable as the Petzel - this little unit has taken a hammering for about 8 years!