I have another post about my recent order of M60 speakers and the 160 center channel, but I thought I'd start a new one so the title will elicit more interest. thanks for those who weighed in on that prior post.

I want to order a subwoofer with this package, but am unsure to go with the 500 with DSP, or the 350. I did consider the 400, but for $110 more, you get a lot more sub. I read about the miniDSP that will allow me to control the sub by placing it between my receiver and the sub, then applying software to get the control I'd want (https://minidsp.com/products/minidsp-in-a-box/minidsp-2x4). The unit is only about $150, but I wonder if that will do the same to the 350 as what happens with the 500.

Today my room is 12' deep, 20' wide, with vaulted ceiling for average of about 9'. But in the future I may move and the room could shrink or grow in size.

Which of these options would you suggest?

Buy the 350 and try out the miniDSP?
Buy the 500?
Or, should I still consider the 400?

Thanks so much for your help!