B: Silence is always good, especially because my main rig doubles as an HTPC.
C: 80+ Platinum Certification. I use too much power as it is because of overclocking, so the PSU being as efficient as possible is important to me (a penny saved is a penny earned and all that).
Also, it's Seasonic, so you know it's going to perform and last a long time.
A,B, and C. Seasonic has always made great reliable power supplies. Of course theme-matching and silence are important to me, but not as important as performance and reliability, both of which Seasonic has proven in its products.
A: Would match my H440 case.
B: Silence for late night when the kids are asleep.
C: Fully modular, because my current build is a mess of PSU cables which aren't needed.
1. Reliable- Seasonic PSUs are my go to when I need something that will be high quality and last.
2. Efficient- gotta love the plat rating.
3. Silence- quiet is better than noisy
C. I'd pin my reasoning for buying Seasonic purely on track record and reliability. I don't really care what color it is, but if it's quiet that's definitely a bonus!