I have 2 sb3000. Very happy with them. Ht they do a fantastic job. Looking to add another one soon. They sound great with music, but I am 95 percent ht. Listened to rel t9/I and jl. Decided on svs. Sb3000 had great reviews so I jumped in, no regrets. I've also seen many great reviews on psa. I have one sub in front between TV and speaker and another opposite rear corner. One sub is OK. But 2 is definitely needed. I have a anthem avm 60 and used it's room correction, gave me poor results. Friend came over and used rew. Deal breaker. If I was going to change subs I probably would look into the psa 21 sealed. Like I said I'm mainly HT.
Good luck