M7 is still available in 80ml bottle with the new packaging. M7 Oud Absolue.
For Gucci Pour Homme I, check out Comme des Garcons 2 Man (brown bottle), or stretching it up a higher notch would be Memoir Man by Amouage
Opium Pour Homme EDP - I have not smelled the EDP but you can check out Lp. No 9 for Men by Penhaligon's which smells similar to Opium Pour Homme
Alternatives for BdP - Heritage by Guerlain, New York by Parfums de Nicolai