Just as an aside, if you don't like the Shelter on the WB arm, try the WB cartridges. Their own cartridges are awesome - I love them. Their higher end carbon fibre bodied models are really exceptional, but even their entry level models are quite strong. And of course the synergy with the WB arm is there.
The WB arm gets around a lot of the conventional cartridge matching problems of other unipivots for the reasons Twl mentions. The arm is a modified unipivot so it has some stabilizers and other mechanical changes which I feel improve on the standard unipivot design.
The WB arm gets around a lot of the conventional cartridge matching problems of other unipivots for the reasons Twl mentions. The arm is a modified unipivot so it has some stabilizers and other mechanical changes which I feel improve on the standard unipivot design.