1. Sunfire DS8 - same cost as HTS 12
2.Q-Acoustics 2070Si - almost same price as HTS12
3.Focal Cub Evo Active Bass
4.Definitive Technology ProSub
5.KEF Q400b
6.Polk Audio DSW PRO 550wi
7.Q Acoustics 3060S
8.Q Acoustics 7060s
9.Q Acoustics QB12- 3k more than HTS 12
10.BIC america PL200 II
some are out of stock here.BUt definitive,Wharfdale,Focal,Elac,Polk ,Paradigm(amazon and out of stock always),BIC,POLK etc are there.Dayton i didnt find any