I'm far from an expert on the HG scene. I rarely partake... My preferred venues are walk-ups -- particularly the Thai nests...
But your questions seem backwards, at best... You should focus first on identifying a good agent. They will then direct you to a hotel. While they may tend to use the same hotels over and over, that is no guarantee.
The recent trend is for many agents to "mark" their ladies by using a common prefix to the ladies' names (e.g., "AL." "BC." "CK." "Free."). By itself, this marking is not a guarantee that the agent is good. But most of the ones that do this seem to be well above the norm. The prefix also makes it easy to search for their ladies to confirm whether they provide good and reliable service.
Disclaimer: This forum is operated as a real-time bulletin board system. 141CLUB.COM carries no legal liability on its contents. All messages are solely composed and up-loaded by readers and their opinions do not represent our stand. Readers are reminded that the contents on this forum may not convey reliable information thus it is readers' own responsibility to judge the validity, completeness and truthfulness of the messages. For messages related to medical, legal or investment issues, readers should always seek advice from professionals. Due to the limitation of the forum's real-time up-loading nature, 141CLUB.com is not able to monitor all the messages posted. Should readers find any problems regarding the messages, do contact us. 141CLUB.COM reserves the rights to delete or preserve any messages and reject anyone from joining this forum. 141CLUB.COM reserves all the legal rights.