I am new to the forum and need help. I have narrowed down my new knife purchase to either a Benchmade 551-1 and 555-1. I am not sure which blade design I would like best. This knife will just be for edc and general around the house use. I know this is personal preference and I can't afford to buy both. If someone could steer me into why one would be better than the other i.e. easier to sharpen, ease of opening etc. I would appreciate it.