There are strip clubs on the strip but north of the stratosphere. OG (olympic gardens) is one of them but the quality has gone down lately.
As to which strip club to go to, it all depends on what you want. Spearmint Rhino is one of the popular clubs in town, many gorgeous girls. A lot of hype to get you into the private VIP areas though, but then you end up spending a hundred or more for a few minutes of fun. no guarantee you will even get to touch the girl though as some girls won't allow that. The club gets pretty busy after 9 so go early. For me it's too crowded for my tastes and lap dances in the main showroom are lame with no touching at all.
Saphires is on industrial road behind the circus circus/stardust area. One of the biggest clubs with a good amount of girls (though a notch down in quality compared to Spearmint Rhino IMHO).
Treasures in the same area is a smaller club with a good mix of asian girls with girls of other ethnicities. lap dances in the main area can be a little more "hands" on but it all depends on the girls.
Hustler just opened their club last year. It is located off russell road past MB. nice looking club but IMHO way too bright and not much action in the main room (lap dances there are lame).
All of the clubs have the hype to get you to the private VIP areas but be forewarned, though they say that you can get more "touchy feely" in the VIP areas it's YMMV with the girl, no guarantees.
Penthouse club also has a club near the Hustler club. Nice looking club but YMMV also with the girls.
There are many other clubs around town that are smaller, with less attractive women but also may allow more contact with the girls. Cheetahs is one of them, Lil' Darlings is another (though Lil' darlings doesn't serve alcohol). For 6 young guys it probably is best to check out the popular clubs like Spearmints or Saphires. Whether they like their experience will all depend what their expectations are.
One thing to avoid, don't go with the bottle service, that gets expensive. and use cash if possible to avoid getting ripped off with charge card expenses.
Also, the strip clubs are classified into 2 categories, nude or topless. the Nude clubs are non alcoholic (except for the palomino club which serves alcohol since it was grandfathered in many years ago). The topless clubs serve alcohol.
Going with the all access pass should be all right for a group of 6, that way they can have the club pick them up and get you in. Many people like the vegas strip clubs, you have many girls coming in from all parts of the country, on weekends many girls from LA may come to vegas to make a quick buck. At local strip clubs you get the same flavor of girls but in vegas you might see a different crop of girls every time you visit.
It's interesting that some people call people who go to strip clubs "losers" and "no life". Others think that people who are married with kids are losers with no life because the single guys can spend their money on whatever or whomever they want, go where ever and do whatever they want and don't have to worry about school and college and expenses. To each his/her own, we need to respect each other and not call others "losers" just because they do things that some people don't agree with. That's JMHO.