Is toner stable?

Hello, just bought the Dell C1760nw color laser printer, switching from a color inkjet. With the inkjet, ink cartridges sometimes dried out and became unable to print, especially when using third-party cartridges. So I'm concerned if this is likely to be a problem with toner. Dell toner is rather expensive, so will I have problems if lower-cost third-party toner cartridges are used?