My big Cochin roo would crow CONSTANTLY! But, he lived with another rooster. My Silkie boy hardly crows at all. Maybe once in the morning and one or two more times throughout the day. But, he's the only boy I have now, so he doesn't have to be very vocal to impress his girls. What I'm saying is: every rooster is an individual (even those within the same breed), so there's no guarantee you'll get what you're looking for. If you don't like the idea of fertile eggs (most ppl can't tell the difference anyway) or upsetting your neighbors with noise, why not just keep hens? They don't need the rooster.....good luck with whatever you decide 
