While DBEST’s Transformative is the most complex device in this roundup, Swissvoice’s BH01u ePure is the one that most elegantly solves a previously obvious challenge for users. Nearly two years ago, we reviewed a beautiful but flawed accessory from Native Union called MM04i, which contemplated that users might enjoy a traditional telephone handset that doubled as a desktop speaker system. Subsequently rebranded the “Honeycomb BT…