I know it's a broad question without putting a dollar figure on it, but still I'm wondering what general opinions are. Thanks!
Two of those are pure trash. One is possibly ok but I know has its bugs, and the other is the most solid in the car audio market but isn't the cheapest.I realize that, and you're right of course. What about general quality of the more popular brands. I'm thinking Audison, AudioControl, Helix, Zapco.
I have always wanted to try an MS8 but at this point with the age and having to buy used, I think the minidsp with diraclive is going to be my best bet with auto-tuning.The only other DSP I might consider would be the MiniDSP 8x12 DiracLive DSP. That is a very unique DSP in that it has DiracLive auto-tuning capabilities and uses FIR filters instead of IIR filters. My understanding is that FIR filters are more powerful and may give better results over IIR filters. Plus the whole DiracLive auto-tuning is a huge benefit for those that don't want to get too involved with the tuning process, but still want to end up with great results.
Just my two cents.