Uh well this will be short reason being Im in a league match lol.
CPU- Well starting off with the CPU I picked the 4690k because I wanted something I could overclock on and that could handle things without being overclocked.
MOBO- I wanted something with a good and easy to navigate BIOS this being my first PC. I also wanted it because it looked nice :)
STORAGE- I didn't go for an SSD because I really just don't need or want one right now and 1TB will suffice for me at the moment.
GPU- For the GPU I had heard great things about the R9 290 and after doing research all over the summer and waiting for my birthday and still changing my mind on components and then Christmas I realized why they said it was good. In my opinion I think It is a very good card for the price range I got mine at with the cooler on it.
CASE- I really regret buying this case. I would've gotten the S340 but I didn't like the boxy shape of it. I would not recommend getting the 431 unless you don't like cable management
PSU- I wanted a fully modular PSU because of the fact that the 431 had no cable management.
MONITOR- The monitor looks great and has a nice looking stand. I haven't noticed any tearing or other things like it.
The first week I had my PC I had no internet in my room so I couldn't play online which was horrible. Overall I thought it was a fun experience and I'm getting 8000 combined on firestrike