Playing 5e with a Rogue. To make a long story short: In my possession I have both Studded Leather armor and a Breastplate. With my 18 Dexterity, My AC with Studded Leather is 16 (12+4). But if I don the Breastplate, my AC is the same: 16 (14+2). Since neither have any disadvantage on stealth or DEX throws - what confuses me is what the difference is. My character has the money to pay for training and doesn't need cash to the point where I need to hawk the Breastplate for coin. Nobody in the party needs it, and so the question remains:
Is there really a difference between them at this point?
Is the choice cosmetic now? Between a Rogue wearing spiked leather padding all over - or a dense plate with free-flowing arms and legs otherwise? It can't be this simple, there has to be another angle to it that I'm unaware of. There's no reason for a piece of medium armor and Light armor to be statistically identical.
Is one truly wiser a choice than the other? If I swap out my Studded Leather for a shiny new Breastplate, is there anything else for me to worry about other than another 7lbs on my person?