We ate at Our Place (82nd and Third) last night and the food was excellent. Service was very efficient and professional, and it's a nice, subdued environment with an adult crowd (at least on a Tuesday).

I haven't been to Peking Duck House (53rd btw Second and Third) in a few years, but the peking duck is very good, carved and prepared tableside, and I recall it being a relatively upscale place.

I ate at Shun Lee (east) last year and was thoroughly unimpressed by the food - way too much cornstarch in the sauce.

OP should realize that "upscale Chinese" is usually going to be very different from upscale American/French/Italian/etc., in decor (gaudy), service (efficient, not overly friendly), and ambience (crowded and busy). It's just cultural - we go for the food.

Now, if you want something a bit off the beaten path, try O.G. (6th btw A and B). Not Chinese per se, but outstanding, creative pan-asian cuisine; professional, friendly service; and the usual cozy East Village decor. Every time we take friends there, they rave about the food.