While I can not help you decide which is better between the SL3 and the Ascents, I can agree with the premise that a replacement product may not be "better" than the product it replaces.
For example, I used to own the ML Sequel II's and I much prefered them to the SL3 which replaced it. I felt the soundstage was fuller, especially vertically.
I highly recommend you trying to listen to whichever speakers make your shortlist using similar electronics to get what you feel sounds best to YOU.
(Perhaps you can bring along your CD player to both dealers so that at least the front end will be exactly the same).
Good Luck in your search! (Especially since I probably muddied the waters for your decision!)
For example, I used to own the ML Sequel II's and I much prefered them to the SL3 which replaced it. I felt the soundstage was fuller, especially vertically.
I highly recommend you trying to listen to whichever speakers make your shortlist using similar electronics to get what you feel sounds best to YOU.
(Perhaps you can bring along your CD player to both dealers so that at least the front end will be exactly the same).
Good Luck in your search! (Especially since I probably muddied the waters for your decision!)