My dealer tells me that the Coherence 2 is clearly a step ahead of the Synergy 2i with BPS. I have the synergy 2i with Rowlands 501/PFC. Have you had a look at the new pre amps from Rowland as well? The criterion is way above my budget but it'll be interesting to see how the little Capri with PFC compares with the Synergy 2i.