my setup is quite a few K as well, but there is the power usage aspect, then you have to work with keeping it all cool (generally the more you spend the more it's capable of, bigger processor/storage in the unit, more cooling...) also the fancier units tend to have higher cooling requirements, so you get them past 30 degrees and their fans start to spin up, hard drives start to cook.
being 1RU just makes that situation worse (less space able to radiate the heat into, less space for large slow rotating fans)
I can well understand if you need this stuff for work, but I'd hate to have it at home running 24/7