F12 has best static pressure for heatsinks. Although I personally like the P12 better for heatsinks because it's quieter but still has great static pressure. Keep in mind my recommendation is assuming you can get the PWM version. So even if you wanted the slightly louder F12 for its higher static pressure I wouldn't recommend it unless you could get the PWM version. It's definitely much more convenient having the CPU fans automatically change their speed depending on temperature. And Noctua's PWM IC is stellar.
For a case fan I'd recommend either the S12B or the P12. Both would be solid options, if your case has restricted areas for in taking air the P12 would probably be a better option.
EDIT: missed the cooler part.
- Everyone recommends the Evo because of the price to performance ratio. And it is a decent cooler. But I love noctua's build quality and the 6 year warranty. Their customer service is great. So I'd say if your on a budget go for the evo. If not go for the noctua.
ok, noise no issue for me. F12pwn for push pull evo and s12b for case. But one thing apart from noise, why ppl prefer noctua on sickle flow? Sickle flow runs on 2k r.p.m and noctua fan not more than 1.5k r.p.m...high speed=more airflow or static pressure?