To DXP or not to DXP, this is a complex question.
P99SE is a pretty stable product and you will only have an issue with large files sizes if you use the Access database file storage method and do not regularly compact the database.
If you use the windows file system method a single .ddb file is created and it is only usually a 1-2k file size overhead to the project.
As for DXP, well P99SE was what was created after the lemon known as P99. A lot of people do not realise that P99 and P99SE were actually quite different major releases.
DXP when released was in a WORSE state than P99 was so it is a bigger lemon.
DXP has great potenential but new users looking at DXP should be WELL WARNED to join the DXP user groups and forums and judge its suitability for themselves by browsing the archives. You can still trash a netlist even with sp3pr2, have a board trashed due to DRC bugs especially in power planes, and common jobs that take <10 secs in 99SE take 10x that in DXP so productivity goes down for the majority of simple everyday functions.
Fully funcytional, time restricted demos are downloadable for 99SE and DXP directly from the Protel web site, if you want a fair comparison then make a very simple circuit on paper as a test project, try to build it in 99SE making note of time and design process then do exactly the same excercise in DXP.
Really strange that Altium STILL sell and ACTIVELY promote/market P99SE sales as well as DXP at the same time. If DXP was all things to all people they would have dropped promoting and marketing 99SE as soon as DXP was on the shelfs.
Orcad capture might be a clumsy tool but it gets the job done and has done so for many years.
So best answer, as you can get access to both softwares for test directly for yourself.
Good luck to all