Shooter08 is absolutely right about the differences he mentioned, between the CX- and the STL-Series!
I just would like to add a few things. The CX-Series is a collection of over 80 different cue designs, which you won't find exact the same in other Series!
The STL-Series is a collection of 20 (not 21) different cue designs. Including the favourites and most sold cues of the earlier/previous R-, SP-, SL- and ST-Series.
But neither the STL- nor the CX-Series are strictly limited in the number of editions! In contrast to the Schön Unique, Elite and Ltd. Cues!
If you prefer, here you got an extract of Schons official Homepage. You will find under
www.schoncustomcues.com / About our cues...
Schon STL is a collection of 21 cues which are the classic favourites from all our years of cuemaking, a combination of the R series, the SP series, the SL series and the ST series.
Schon CX is a collection of cues made exclusively for Cuestix International and may only be purchased through a Cuestix dealer.