Haven't heard the Blades but when it comes to the little LS50 compared to the newer LS50 Meta... I felt like the Meta was just a bit different, not really any better or worse. Not sure how that translates to the Blade though.
I like the idea posted above about trying a set of very different speakers sharing space in the same room. Not everyone can pull this off due to space or lack of family approval. But if you can it might be a great option. All sorts of very fun monitor speakers for example, that would give a different take on your music than the Blades, and not cost a ton of cash.