Men's Spas and Adult Bookstores.
First, let me just say, you must like group sex and or not be too picky about who sees you naked to go to these. I have found that most bookstores are a pretty sleazy. First I don't thing they make much money, or they just prefer not to clean or keep the maintenance up. Especially if they are in small towns. I have been to one in South Dakota which was pretty nice as far as arcade type bookstores go, but a lot of them are dark and that makes it very suspect to the cleanliness. I have found some pretty hot times in them, but you must be able to go with the flow. Also, make sure if you don't want anyone to know you go, stay away from ones where you may know someone. I once went to one in the same state I live, and saw someone I knew as I walked in. I spent the rest of the time, trying to get out without him seeing me anymore. I'm sure he knows the people working there, and probably checked the cameras and knew it was me. I have spoke to him since, but he has not said anything about it.
As far as Men's Spas, I have been to the two in Denver, CO several times. The Denver Swim Club is probably the best for nicer looking guys, but they seem to be a little pickier. It is a little cleaner too. Mid-town Spa is a little darker, and usually older, and more bear types. I do find I have about the same amount of fun at either. The best one I have ever been to is the one in DC. It is called the Crew Club. I had a good time there, It is much cleaner then the ones in Denver, but the afternoon I went was pretty slow, although I found some fun.
I have heard about Steamworks in Chicago and it apparently is one of the best in the country, I have never been there, but would love to sometime. I have a friend who goes, and does not touch any of the guys. He is really worried about his health, as we all should be. He just enjoys watching and taking in the guys.
Do understand the risks, even blow jobs or kissing can give you something. HIV is not the only thing out there that can cause you problems.
I will let you know about the particulars about the phone sex services I use next time.