I've been using a DL-103D for several years with an RB300 and now RB600 tomearm. Bass is lean with the stock Rega counterweight. It fills in nicely with the Heavyweight and presumably with the Kerry Audio titanium iteration. Also, my current favorite, the Michell Tecnowieght brings the bass into balance too. You have to spend more than 800 clams to do better than a Denon 103.
Phil
Phil