Synthetic Harry Hartmann Reeds
Because synthetic reeds are so consistent (and because one will last as long as two or three dozen cane reeds would), they're sold in singles rather than in boxes. There's still plenty of choice, though - unlike other brands that only make one type of synthetic reed, Harry Hartmann has a few varieties to offer. The standard type is in carbon, such as the Harry Hartmann Fiberreed Carbon Clarinet Reed. But if you'd prefer to try something different, you could look into the hemp-based material in reeds like the Harry Hartmann Fiberreed Tenor Saxophone Hemp Reed, or maybe try out the closest approximation to natural cane with Harry Hartmann Natural Fiberreed Soprano Saxophone Reeds.
All these varieties are available for just about any woodwind instrument you might play, so it doesn't matter what sort of musician you are - there ought to be a few synthetic Harry Hartmann reeds here for you. Any one of them will provide all the best traits of synthetics: very long life, consistency, no break-in period and virtually no chance of warping or splitting. Beyond that, the choice between the various materials is yours to make based on your personal preferences and musical style.