Depends on the price point, if you count your time, and if looks matter.
The price point, in line with this thread, is ~$5k total for mains, surrounds, and sub(s).
"Time" (and effort) is what my debate point is all about.
"Looks" are another aspect of the debate point. In my personal experience, looks do not matter at all. I paint all of my boxes flat black and hide them as well as possible in the room. But for others, this will add even more time and labor when considering commercial versus DIY.
If spending $3k on mains, and looks don't matter, ya, DIY will smoke the commercial stuff.
Really? At that price point, for example, what DIY design would smoke something like the SVS Ultras or the GoldenEar "bookshelf" speakers (they are not really bookshelf, but they are not floor standing either, so I don't know what to call them)? Have you heard these yourself or are you just assuming based on specs?
The SEOS kits do change this though, if looks don't matter. Cause you'll get a painted MDF box unless you're willing to put in some serious effort.
I am *assuming* at this point that the SEOS designs are as good as my current Unity Horns, but I don't know that for sure. My seven Unity Horn enclosures are similar, but not identical (mine are slightly smaller and painted flat black), to Cowan's units found here:
I would love to have the chance to directly compare my Unity's to the SVS Ultras or GoldenEar Whatchamacallits, but there is no way I will ever get the opportunity to do so, as my speakers are simply too big and heavy to bring anywhere.
Have you, or anyone else, had a chance to directly compare the best in DIY (I am assuming SEOS will be involved) to the commercial units I mentioned? Or any other high performing commercial speakers in the same price range?