I use a pair of Valencias that I like. Completely stock , very lively and musical. I listen to my Pi4's mostly, they are slightly more revealing in my set-up, and they reproduce more of the frequency extremes. I also have a complete set of model 19 parts I will be building into a Pi configuration this summer with tube crossover with the kind help of the Pisters on this forumn. A7's are real nice, Bruce Berman lives 8 miles from here and he uses them with some wild tube stuff, pre-amp using 76 triode with all transformer coupled type 50 triode tube amps. His have the modified 500 hz. xover.