I am very happy with the issues I have downloaded. Specifically, I can say a couple of issues saved my life last year. I was building a pen test project using Kali and I could find no resources to learn basic pen testing attacks (DOS, MITM, Metaspolit) and Kali scripts. I was lucky because HAKIN9 had just uploaded two issues on how to use Kali which basically gave me all the information I needed to complete my project successfully (and got best project prize as well!). From then onward I was checking on the website for free interesting issues continuously and found a couple of more recently (CEH and DDOS issues).