To provide clarification for me it would cost any extra $1000us for custom designed cabinet as opposed to the Pe designed speakers? If so the Pe designed cabinet seems the way to go as it looks lie a nice design.
Keep in mind that it would also cost an extra $1000 for custom veneer applied over the Parts Express enclosure, so if someone wants a custom look and likes the look of stacked plywood (some do, some don't), it is a better value for a 100% USA-built rock-solid heavy enclosure.
I'm curious to see the final price on the Tempesta Extreme floorstander, which would seem to tick every possible feature wanted in a high-end loudspeaker.
Steve