Which would be better, the Paradigm Persona 3Fs or the Dynaudio Focus 60 XD speakers?

Improved crossovers through active designs are a big improvement especially in three ways. Diaphragm material is overrated and cannot make up for poor driver overall design, integration and motor quality 

@mmeysarosh

+1 Exactly my experience. Exotic diaphragms - especially rigid light weight metallic or ceramic ones are NOT the holy grail. I still prefer the internally damped sound of pulp paper and soft fabric woven material usually doped with a damping chemical. Constrained layer damping is the latest approach in these designs. I find they hav a noise floor and clarity far superior to anything else. The limited bandwidth and heavy material can be compensated for without a super powerful motor and larger voice coil. Only drawback are they are expensive to make. A light weight cone will RING making a hashy sound and hiding detail - but they are cheap to make as the motor can be small - being cheap they are very popular outsourced parts by speaker builders.