I was craving a truly New York sandwich while staying on this side of the strip and did not want to trek to the Mirage for Carnegie. I hadn't heard of Greenberg's Deli before but I had to try it because the other people's orders looked fantastic.
i tried the pastrami sandwich with a pickle. The meat was very good and on par as far as quality with Carnegie. On the strip, these are the only two comparable New York delis that I have found. Greenberg's would be my recommendation for quality, while Carnegie's portions are unmatched.
Still, Greenberg's is not too expensive considering its location. The meal was delicious, filling, and the pickle was extremely good. Come here if you're from New York and felling homesick and craving that pastrami. It won't be directly comparable (it never is) but it surely won't disappoint.