I am subscribed to both Audioholics and SVS newsletters.
A new subwoofer is by far, the most warranted upgrade for my system. I've been living with the same old, port chuffing, inadequate sub now for 17 years! It's definitely the weakest link. I've made cardboard cutouts of all the SVS subs that can fit, and the PB-2000 fits the bill (see attached). Please don't make a fellow home theater enthusiast cringe at the sound of weak, flatuant, port chuffing bass at every depth charge explosion (U-571) while he looks at piece of cardboard and only wishes for one day to experience real bass.......I even recently received preapproval in the WAF dept!