I don't have experience with too many breeds of roosters... I CAN tell you that be prepared for them to crow at all times of the day, not just in the morning.
Just so you know, your neighbors MAY be annoyed at all times. I happen to like the sound of roosters crowing, but not everyone does, obviously.
However, it does seem to me that of the breeds I do have, they definitely have different voices. My SLW is LOUD in comparison to my SFs. He sounds like he'd be hurting his throat, as if he's really straining to be as loud as he possibly can be. I only have one SLW, but a friend of mine to whom I gave several SF roosters says that SLWs were definitely louder, in general, than the SFs.
However, I have one SF boy who is on the loud-ish side, though not as bad as my SLW. Most of my SFs sound as if they're trying to sing in falsetto, though. It's pretty funny.
I have a little bantam barred cochin who sounds more like a finch. He started crowing early. He crows rarely, it's pretty durn quiet, and it sounds more like a little "tweedle-dee!"
So... some will definitely be quieter than others, but honestly, you never know what kind of annoyance factor you'll be getting with a rooster until you get one (unless you get a grown up boy), and you still have a good chance of annoying your neighbors with a rooster, anyway.
Unless you're in a real hurry, you might want to start with the hens a little early and give them time to start laying so you can butter up your neighbors with eggs BEFORE they start hearing the rooster crow.
That way, the rooster sound will signal: "Yum! Fresh eggs!" Rather than "Rackafracka, that darn thing is screaming again!"
That's just my opinion, though. It's also problematic to some degree to integrate different ages of birds together, so you'll have to weigh your options