Bluetooth speaker recommendation

[amper]

My son is getting some speakers for Christmas and after spending hours looking at black friday deals, i realized i should ask some audiophiles.
He will basically be connecting his phone, probably via Bluetooth, and likes to listen to funk and rap music. Therefore I think the bass should be good, but also be balanced to hear all the subtleties. We are looking to spend around a hundred dollars and unfortunately the best deal seemed to be an altec lansing on best buy that sold out. I know the best bet is probably the audioengine a2,but its just more money than my wife wants to pay. Any suggestions?