There is a saying that anybody who buys a drill doesn't actually want a drill – they want a hole! The same can be said for a drill bit – people actually want the right drill bit to create the right hole in the right material. SDS drill bits tend to last a lot longer than hammer ones, so if you could do with a new drill now is the time to invest before you buy the drill bits. Drilling into glass / tile – then we have drill bits for that too.