It has more to do with buying the right part for the project rather than buying something based on brand name or price. If you buy something rated for 60A, and you only draw 40A, then you are fine. If you buy something rated for 40A, drop in an 80A fuse and start drawing 50A constantly, you're asking for trouble.
It's the same story with a subwoofers. I've seen posts on other boards of people asking why their sub isn't working, and wanting to know if it could be the amplifier. After a few question you find out that they are pushing 1200 watts RMS into a sub rated for 600watts peek.
It's all about common sense. Use the right part for the job and you'll be fine. I wouldn't bother with the Digital stuff unless you really like bling. In the end it's just something else to go wrong. I would also avoid distro blocks that are positive and negative combos. Combining the two in one enclosure is just asking for trouble in my opinion.
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