SVS makes a fine product. If you want tube subs, they are the way to go at this time unless you are willing to DIY. Their box subs are fine products as well.
Hsu makes a fine product. I own a pair of HO turbos and two other, much older Hsu subs. Even if the initial HO driver did not meet the intended spec, it is a wonderful performer and the to-spec driver will just be frosting on the cake. The Doctor makes a wonderfully musical product.
Get over the hyperbole on the threads. It is almost impossible to make a mistake with either company's product at a given price point.