In many decades, I have been at a couple of dealers that were any good. Most of them will tell you that their stuff is the best, even here on agon.
I attend shows and when I find something I like, I will bring it home along with others to audition them in my room and in my system. Most manufacturers/online dealers/local dealers will give you up to 30 days return policy. My buddy brought in many dacs a few years ago and for weeks we did many eval sessions. He bought 1 and returned the others.
I will never ask a dealer for their recommendation because I know what they will say. You need to trust your own ears and audition a component in your system in your room