HP monitors are generally pretty good, but they don't get as much notice as Dells or Samsungs. But you need to be more specific about which LCD model you are looking at.
HP and NEC typically use S-IPS panels in their LCD monitors more than any other company to the best of my knowledge. I'm not saying they use S-IPS panels in every single monitor though, just more than others from what I've seen. However, you will never see a 22" LCD monitor made by HP, NEC or any other company since no one (Samsung, AUO, Ch-Mei) makes 22" S-IPS panels.