Depending on the quality (or accurate capcity reporting) of the cells, the "higher capacity" ones may give you LESS runtime. I've seen this too many times for it to be a fluke. I'll pay more for "lower-but-accurate" capacity high-quality cells than cheaper "not-really-higher-capacity-but-they-say-so" cells of dubious origin. If all else is equal, ten the higher capacity units will give you a few more minutes of runtime as has already been stated...