"are there any better fans ?"
Depends on what decibel-level rating you're shooting for, and whether your case design and case-mod leaves the fan muffled or exposed.
I looked into the Panaflo's -- what is it ? -- something called a "Hydro-wave" bearing? I thought the air throughput in CFM's didn't give me enough lebensraum, or what's the same thing -- the rpms were too low in providing lower dB's.
Without dumping on the Panaflo's, if you want more CFM's you might look at the SUNON 120mm x 38mm at a CFM of 108 and dB of 42. But that's a heavy fan -- 326 grams. I'm getting ready to try YS Tech's 120x38 with dB(max) of 45 and 125 CFM. It's something just over 200 grams in weight. Those fans have MTBF's of 100,000 hrs and 75,000 respectively.
Figure you can tune down a noisier fan of higher throughput and the noise level will be closer to fans like Panalfo's, but you need to throw a fan-controller into the mix. Oh. And there's no speed-monitoring circuit with the SUNON, at least not with the 120x38mm. Nor with the YS Tech, unless I'm mistaken. You can have fan-monitoring with a 120x25mm Sunon at 90 to 98 CFMs, and a Silverstone 120x25mm at 105 CFM and a slight motor whine at full-throttle.
A lot of the noise in the quieter selections of these fans is air-turbulence. But I have to turn off my TV just to hear my computer running with the big Sunon, and it's mostly like an Air-conditioner vent -- "Sshhhhhh . . . . "
But people with a different noise and heat tolerance swear by the Panaflo line. Hey! It's "Panasonic" -- right?