Magico, Aerial, Dali

I have my next speaker upgrade narrowed down to the Magico V2's, Aerial 7t's, and Dali Helicon 400 MK2's. The only problem is I haven't heard any of them in my own system consisting of ARC LS17SE pre, and Bryston 4Bsst2 amp. I can get the Magico's for a decent price but they're still more expensive than the other options and the dealer will not let me demo at home unless I pay him. I thought this was odd and kind of turned me off to this dealer in general. Seems like for that kind of money in this economy the dealer should be willing to let a serious buyer demo at home.
I heard the 7t's on ARC reference and Levinson amps and was very impressed. Hard not to be with those kind of components. The Dali's are less expensive and I heard them on much cheaper gear but they still sounded fabulous. The dealer has arranged a demo later this week. If I went that route I'd have some money left over to buy a phono pre. I currently have the Aerial 6's and like their sound but they're not enough speaker for my room and if I sell now I can get the same amount that I bought them for.
Does anyone have experience with these three speaker's and/or companies? I am looking for detail, transparency, and realism. Any suggestions? Are the Magico's worth the extra money? I know it comes down to subjective taste, but is there a consensus on what the strengths are of each of these speakers?