SHINee and TXT for me. They tend to dance well in synch, and I think that their choreography is super good, with it txt's having a really nice focus on shapes and overall positions. I think that their dancing is just really nice to watch, and that they utilise everyone perfectly. 
As for my other groups, exo aren't the best at dancing in synch/really together, and while I love bigbang and b1a4, lets not lie to ourselves about their dancing. Oneus has a very specific style you see a lot in their choreos, but they also aren't the best dance group either. Finally, the pinks aren't known for dancing formations, and sometimes the choreography can be...questionable (stares long and hard at kiel tutin)
![[IMG]](https://joblessculturetechnologymusic.files.wordpress.com/2018/10/tumblr_phctjohs5h1xtzkd4o2_540.gif?w=1500&h=)
![[IMG]](https://katherinedoeskpop.files.wordpress.com/2017/05/tutting-intro.gif?w=620)
