I have found that several tracks off my last few albums make unusual and pleasing ringtones. You can make them yourself for iPhones in Garage Band - just drag a track off the CD you purchased (!) into Garage Band's ringtone template and then export them into iTunes. I like to make them for the maximum 40 seconds, and it sure beats Crickets. Some of my favorites:

Intake, Quantum Entanglement, Miskatonic, Amarna, Stabat Mater (off SMG)

I'm still fussing with some SMG material but the delays are all work-related. I have 1000 things to produce and no clones to help me...