I may be wrong but check your Saxe(s) in DimLE GPO; I've got about 10 Sax choices in DimPro, half of which are extremely decent;
I'm guessing DimLE/GPO has only a couple GBytes of 'wave-synths'.
Also, check CW website samples of DimPro (GPO) Sax, etc.
The Saxes are what made me switch, Mark.
Why is GPO in DimPro better than GPO in DimLE? GPO is GPO, is it not?
Unfortunately, DimLE-GPO appears to be only a sample of GPO. I think it has about 1/2 of GPO; albeit DimPro Orchestras are more G-Byte intensive than GPO.
AKA: I use nothing from DimLE, except 'Xmas Bells' if I recall (which may be under Bells)
Note: DimPro has Vista issues and may still have 32-bit limitations; but CW seems to imply (in Sonar-7 ads) that DimPro upgrades are Vista do-able

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Once you play a DimPro "Les Paul" guitar or "Grand Piano" (which neither GPO nor DimLE seems to me to have) ... methinks you'll be a believer.
Philip