This repertory really is a beautiful piece of work and makes a very valuable contribution to the progress of homeopathy. Of note is the return of the Anatomical index, first seen in the Millennium and a new section called Associations, which is similar to parts of KHA's Relationship Repertory. Another interesting new feature is the labeling of rubrics as Phenomena, Modalities or Location, which is a good thing.
Additionally a great many new cross-references have been added.

The Complete 2009
Nearly four times Kent and double Synthesis
Compared to the Synthesis 9.1
The Complete 2009 has nearly a MILLION more remedy listings (846,949)!
Compared to the Complete Repertory 4.5
981,300 more remedy listings!
Compared to the Complete Millennium
730,562 more remedy listings!
Compared to the Complete Repertory 2005
376,983 more remedy listings!
Compared to the Complete Repertory 2008
165,599 more remedy listings! 483 new remedies
Complete Repertory Classics 2009 by Roger van Zandvoort
CR Classics is based on a subset of CR 2009, filtered out are those rubrics that did not occur in Kent's repertories, Boenninghausen's repertories and the Synthetic Repertories (hence the name). In all rubrics from these forementioned repertories available in Classics, all remedies maintained are also available in Complete Repertory 2009. Cross-references are maintained for those rubrics available in Classics.
Repertory
Kent ++
CR 4.5
CR 2005
Classics
CR 2009
Synthesis 9.1
Number of rubrics with remedies
64 230
125 583
158 475
75 285
178 094
139 714
Number of remedies
624
1 536
1 846
2 126
2 393
2 373
Number of remedies that occur in at least 100 rubrics
362
587
942
990
1065
unknown
Number of remedies that occur in at least 1000 rubrics
157
229
361
319
417
unknown
Number of remedy occurences
503 145
932 636
1 546 403
1 247 288
1 913 599
1 066 987
Grade 1
338 879
720 027
1 078 098
829 212
1 327 303
816 612
Grade 2
129 362
171 064
** 23 159
** 42 063
** 56 232
201 295
Grade 3
34 904
41 107
303 956
248 342
360 190
48 610
Grade 4
0
438
141 190
127 554
169 874
470
Number of additions clinically verified (grade 2 + 3 + 4)
164 266
212 609
285 739
417 959
586 296
250 375
Clinically verified, % of total
32,65%
22,80%
30,28%
33,51%
30,64%
23,47%
Number of references and cross-references
0
52 066
131 993
67 033
216 530
28 744
Average number of remedies per rubric
7,83
7,43
9,75
16,56
10,74
7,64
Compensated repertory model
Yes
Yes
Yes
Yes
Yes
No
** In CR Classics 2009, grade four is grade three in the other repertories, grade three in CR Classics 2009 is grade two in the other repertories. Grade two in CR Classics 2009 is non-existent in the other repertories (Boenninghausen’s grade two means mentioned by two or more provers but no clinical confirmation)
Because of the new remedies in the repertory you have to have MacRepertory 8 (released in December 2008) to access the Complete 2009.
Data derived from http://www.morphologica.com.
For all of the details go to http://www.morphologica.com/english/repertory/statistics.htm