This thread amazes me. I have an HSU VtF3 MK2 ( 7 yrs. now)and I am upgrading to a VTF-15 soon because I moved into a bigger place and need tgo fill a little more volume, and I don't want to spend more than $1,000. delivered.
The HSU has been an amazing product for the price point and performance backed by a company with world class customer service. It exceeds my expectation (don't need specs), for what I am willing to pay. If I wanted more performance, I would gladly pay more, but I am very pleased.