Personally I like their beef noodle soup. Although the noodles are the skinny kind and not the fat kind, they are pretty generous with their beef. Yes, the service does suck, as they are mostly teenagers making close to minimum wage there. I heard the owner is a real schiezter who keeps most of the tip money.
We did try the new Thai place next to the gelato place. It was actually surprisingly good. We had the green curry chicken, pad thai, and black peppered beef. Portions were generous, and the curry had a good kick. I'd probably go back there over some of the restaurants in Diamond.
Have yet to try Balcony ice yet, although I love that kind of shaved ice. (Waiola's or Matsumoto's anyone?)