I have an XP-90 and I love it. Panaflo H1A on top, 57 CFM, 35dB. I can hear it over the pair of 7200 RPM HDDs but being a larger fan it's not really whiney and annoying to me. You could get the M1A which is 48 CFM @ 30 dB or L1A, 42.7 CFM @ 27 dB.
Yes, I'm biased towards Panaflos. Been using them for years. Some of mine are 5 years old and still going strong.