Quick test...
A10.jpg > 819,150
AcroRd32.exe > 1,493,652
english.dic > 566,326
FlashMX.pdf > 3,752,097
FP.LOG > 486,886
MSO97.DLL > 1,872,766
ohs.doc > 884,912
rafale.bmp > 799,867
vcfiu.hlp > 716,177
world95.txt > 527,124
Total = 11,918,957 bytes
ENWIK8 > 21,848,093 bytes
Compression time for ENWIK8 was 80.61s on my P3 @750MHz.
Compression speed is impressive even on my old P3 @750MHz machine.