Types of speakers to create nightclub style sound?


Admittedly, this may come off as an unsophisticated post for audiophiles, but I'm seeking advice nonetheless. 

I have a house with an open floorplan and love entertaining. I'm looking to create the auditory feeling of a high-end nightclub at home, as opposed to having a setup with the goal of creating a single ideal listening point. After traveling to Ibiza and hearing some of the world's best nightclub sound systems I fell in love with how they bathe you in sound. Since I can't fit a Funktion One Dance Stack in my home, I'm curious as to what I should look for in the home audio realm to recreate that feeling of filling a room with powerful sound that isn't super directional. 

With a total initial budget of about 4-6k (1k - 3k for a pair of speakers), what qualities should I begin looking for to create this sort of system? I'm thinking used higher-end speakers might be a better solution. 

I've noticed a few different categories of sorts: some speakers have a single driver with a wide-range, like the Zu Audio Soul, while others have several for different drivers, like B&W 603. I absolutely loved the line-source sound from Martin Logan ESL speakers, but their directionality is exactly the opposite of what I want. Moving 2 feet to the left or right of their line of fire made it sound like the music was coming from the next room over. I live in Los Angeles, so there are plenty of used, good quality, higher-end speakers circulating in the marketplace. Can anybody offer a little guidance to narrow my search for what sort of speakers/amp combination might best accomplish this? 
perplexy
As an option to Funktion One, you may look for a used VOID system. Overall, expensive but good sounding when set up properly. Do not forget, Visual Appeal is also nice for a party. It makes people pay attention to the sound system and draws them into "sound quality" topics and conversations. In this regard F1 and VOID are way above the other modern black boxes.
Actually QSC makes a smaller powered speaker that would work really well and doesn’t cost too much- the CP8. I had a pair in my basement and thought they were very listenable and very very good at what they do. Very small footprint too. Pair them with a small equivalent sub woofer and you’ll definitely have a good party system. I wouldn’t say it is audiophile sound quality but it is pleasing sound and definitely would be great for parties. I enjoyed them for relaxed listening and was surprised at how nice they sounded. A real bargain
I am familiar with QSC CP8. I would rate the Tannoy V8 over the QSC's in terms of sound quality. Also the V8 can be purchased for around $350 used, for the pair. 

All that being said, the Tannoy V12 would outperform both of the above, no contest. Hence my original recommendation.
Who cares about the op? Aren't we just venting out in response to the usual audiophile equipment non-sense talk? 
Oh wait, no. OP had a good question so we all trying to help him. Yep, that's it!