Would u give up usher mini dancer 2 for b&w 802's

Absolutely no for me.
Though a bit nasal and bloated in the mid bass the ushers are drivable and has that very smooth yet transparent mid to extreme high.
In comparison the 802 sounds very incoherent.

I'd give up audio if I had to put another pair of 802's in my system.

I really do not like b&w speakers in general.

You're in a lose-lose predicament.