Probably not...but it's diminishing returns beyond a certain point.
Keep it simple... have a think about your preferred targets, look up a few in Stellarium, Sky Safari or whatever astro prog you use and see what sort of field of view you need, don't forget to frame them nicely. Then buy one you think you'd get the most use from. No need to go crazy right off the bat. As has been mentioned, eyepieces can be a very personal thing... but resist the compulsion to buy in every focal length or perceive gaps in your choices, as you'll often not need or notice them in practice
