Hong Kong Club was a major eye opener. I thought i would need to take a 15-20 hour flight to see a similar Brothel with this cailber of women, i was gravely mistaken a 3 hour flight to San Diego, and another 2 hours overland to get to Tijuana gets you the same experience. With Hong Kong Club, Tropical, Adelitas, and Chicago within a block of each other you don't need to go anywhere else. I walked around and looked at the street girls but they weren't appealing enough to me, stick with the 4 clubs above for safety and quality of women.
Granted, There isn't much to do in TJ outside of Sex and Food (good street food, tacos, cheap restaurants etc..) but for 3-4 days you'll have your pick of 7-9/10 caliber latinas in many shapes and sises for only $100/pop. what i didn't enjoy about HK club was that the ratio of Women to men was lower than in Thailand, meaning you had to grab any woman that caught your eye extremely quickly or she will be busy for the next hour. That said, during peak hours there are maybe 100+ girls working and mornings and off-peak there were still 20 girls at slow times of the day.
Also, unless you booked the above hotel for the night (starting at $75-$90USD per night for a decent single room) you had to pay $30 each time to use the room per session (30 min or so), so if you are the type that wants to do multiple women in a day, just book a room upstairs for the night and save yourself the room fees. Bring earplugs as the club downstairs is 24hrs and gets loud at night.
Also if you plan to stay for multiple days or plan on going back frequently, get yourself a $60 HK VIP card, which lasts 3 months, gives you a big discount on hotel fees ( 20%off most days, and 70% off Monday and Tuesday), free rides to the border, and a FREE daily welcome drink. The card paid for itself in savings for my time there.