Ginas, i have heard both the ACT II and Ref 3 at shows; i like them both. what is interesting is that both pre's actually are more strictly neutral than their pedigree's might suggest. i like the sense of control of the ARC Ref 3 and the delicacy of the ACT II.
i try not to hijack threads; but your above comment "this hunt for the perfect preamp" prompts me to add another candidate to your list. particlarly since you are into vinyl. i have a pre-production version of the new battery powered darTZeel preamp in my room. i will just say that if you are truely after "the perfect preamp" and maybe even "the perfect phono stage" then do what you can to listen to the dart. it has blown away all my previous references. and.....as you also are in the market for an amp; the darTZeel amps are a 'silly good' match with the pre.
last weekend i had a couple of guys over; one with SET's and Horns, the other has all Lamm gear (including ML2.1's) and just sold his Avantgarde Trio's. both could not believe there were no tubes in the signal path of my system. the ML2.1 owner commented that until, after listening for 2 hours, i mentioned that there were no tubes, he had not been aware of that. that was a first time of that ever happening to him while listening to solid state.
your Andra II's (designed by Von Schweikert like my VR9's) would sing with the dart gear.