I'm a relative infrequent hobbiest - but travel extensively in the US, frequently in western Europe, and infrequently to Asia... Have participated in the hobby in all places (Phillipines, Germany, France, US, Canada, S Africa). Recently have had the opportunity to travel to Monterrey about every 8 weeks for 3 or 4 days at a time - and am convinced that this place is a keeper... the hotels are inexpensive (500 pesos per night - but you have to be careful that you get a 'girl friendly hotel), you can get deals from the east coast from about $350 for airfare, the city is VERY safe, and it has women that are beautiful, full of life, and are VERY willing.... It also has a very extensive club system, in all price ranges, where you can get pretty much anything that you want... and while speaking spanish helps - there are women that do speak some english & the others will go out of their way to 'communicate'.
Clubs in town range from very reasonable to very expensive. The more reasonable are on Madero Ave - with services including full service with a 8 or 9 from 550 pesos at a mid-range club. Others are available for much less (200 peso)- but Spanish is a must...
Realize this sounds lik a shill for Monterrey - but check out the Monterrey posts - it is a great place - and this is from an American who speaks no spanish - take a look...