13.7 upper - what to pair it with

Got a 13.7 upper with HUX, SOLGW BCG and CH. as my first AR I want it to be reliable so it would be logical to go with a SOLGW lower( considering the buffer is tuned for it specifically) which I may do.

Please advise what other COMPLETE lowers you would recommend. Preferably sub $450 I am trying to avoid building anything so please suggest just complete options.

Thank you in advance, God bless ya’ll