since SSC source their products from a variety of manufacturers and factories I wouldn't necessarily draw any conclusions about individual products capabilities from the performance of others – personally I have had some good and some bad.
Customer service though is independent of the product and has usually shown itself up as being lacking.
However, I have 3x SSC hubs (not the wheel builds, but the same hubs nonetheless) and they have proved very good to date. The "slipping" rear mentioned on bikeradar I think is the same chap who mentioned it on a thread I started about the hubs a while back:
http://www.singletrackworld.com/forum/topic/superstarcomponents-20mm-hub-review
I havent had the rear slip for me yet (6 months or so), and I run it on a SS.
Easy to open up if needed though.
Front 20mm has been excellent and is my main hub – run with 20mm adaptors on Reba 120mm and QR on On-One carbons. Easy swap and no hint of a problem or unexpected bearing wear and these have been to Luchon with me.