1) The ticking (or "knocking", if it's really bad) was mostly caused by early, poor implementations of the scheme and crappy controllers. I recently ran into a case here on the forums where a Sunbeamtech controller reading from PWM signal was making the analog fans it was driving knock. Today I would bet on it being as safe to get a PWM fan as it is to get an analog-control fan.
2) If it features Fan Xpert+ or Xpert 2 then most likely the case fan headers control both 3-pin and 4-pin fans, CPU fan header 4-pin only. Search around, maybe someone has one. For fan preference see above.
3) Two differences I can think of: one PWM signal can easily be used to drive many PWM fans with the appropriate wiring (splitter cable), and since PWM uses a constant 12V chopped up, it should get fans spinning more reliably. Any electrical concerns regarding either control scheme you'll just have to trust the maker to sort out. Other than that, dead even as far as I'm concerned.
4) If you want a heatsink fan, go for pressure and robust bearings. I would pick the Gentle Typhoon from that list, based on the latest SPCR review, where it provided the best cooling at very low volume, and the fact that it features DBB, as in double ball bearings. Pick the 800 RPM model and run with static RPM, that way you can even stick it in the CPU_Fan header that might only be able to control 4-pin PWM fans! (this is what I do with my Noctua)
You can find my rig in my signature. I use the M PRO of that Asus series and would have probably gotten a small heatsink had the review not come out just after I bought the parts. Next time!
PS. I just reread the review this thread is for, and the Shuriken 2B has VERY tight fin spacing, so you definitely want a strong fan with good pressure qualities for it. The test data suggests a standard 25 mm 120 mm fan can provide adequate cooling for a CPU like the 3570K even at 800 RPM, but I would not risk it in prolonged gaming sessions for example - if this is on the menu, go for an adjustable one. If you want analog adjustment, tap a case fan header and leave the CPU fan one on ignore in BIOS (as MikeC is fond of instructing).
PPS. Intel's i5-3570K has a TDP of 77 W (link)
, whereas the test platform's i5-2400 has a TDP of 95 W (link)
and is overclocked AND overvolted. What can cool the test platform can cool the i5-3570K at stock, no question.