Not really sure about listening these the most, but they were the first to come to my mind (sorry for my badly written and pathetic comments, hah):
John Duncan: Tap Internal
I think together with the Mort Aux Vaches CD this was one of the first Duncan records I ever had. Before I heard any audio, I read an interview with him, where he talked about something like scanning the short wave channels at night until he finds something he can relate to with his feelings and state of mind at the moment. Since then I was interested.
Death Squad: Isolation As Intent
Theological Genocide is one of my favourites as well, but this is my most listened Death Squad. Fuck God Live - such a PE anthem! Damn great that it was reissued as LP recently. Also being forever grateful for the Autarkeia CDs.
Merzbow: Venereology
Well, blew my head right off. One of my very first "real" noise records I ever owned. Couldn't believe something like this even existed. It felt like my search for something "different" had come to an end. Fucking grunge was over back then, thankfully.
Pogrom: Multicultural Degeneration
I'm coming back to this one quite often. Violent, powerful, and the white barbarian manifesto. YESS! One of my favourite PE/Noise projects.
Bizarre Uproar: Rape Africa
Could be any other record as well. BU is probably the project I listen to most often. Friday afternoon after hard week at work, Sunday evening to prepare for the next week. Filth & Violence always rules.
Throbbing Gristle: D.O.A. - The third annual Report
Bought this on my first trip to London. "Hit songs" like Hamburger Lady or We hate you (little girls). My first contact with something that was called Industrial Music.
Alfarmania: Skräcken
Kneedeep in the swamps of desolation
Mania: Ultra-Negative
I totally worship every Mania release I own. Blasphemy maybe, but Mania is more important for me than Taint.
Sick Seed: The Great Corrupter
Have the CD since when it came out. Few days ago I got this on vinyl as well. Only shows how great and important this record is, at least for me.
Streicher: All 5 reissue CDs on Industrial Recollections
Listening over and over and over again. Never getting tired of them.