Tannoy Canterbury GR vs GRF 90

Anyone listened to both these speakers and willing share your opinions?  I listened to the Canterbury GR and love the dynamics and tone of this speakers.  I am wondering how the 12 inch driver in the GRF 90 would fair against the 15 inch in the Canterbury GR.   I was told GRF 90 is a cleaner sounding speakers and actually has slightly more extended bass but Canterbury has more dynamics and richer in tone.   
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