I have to say, the last two computers I've built (back in 2004 and then 2011) both used Asus boards and they have both been flawless but I can't comment on the reliability their more recent boards.
I had a Seagate HDD that packed up after a few months and which I replaced with a Samsung Spinpoint F3 back in 2011. It was much quieter and faster and still works well today. I have also had a Samsung SSD for a couple of years that I can't fault either.
As for PSU's, I've had an Antec true power 430 that is still in my brothers PC after 11 years and in my current rig I've been running a Corsair HX 650 for the last 4.
I have used both Crucial and Corsair memory and have had no issues with either.
The only hardware fault I have ever had was that shitty Seagate HDD.