Dear buczacz,
Whatever suits you buczacz; but as you can see from other posts in this forum Sidekick98 has 'Stuff' in it that Sidekick99 does not have.
It was a case of -Starfish- deciding that a reduced set of capabilities was going to make Sidekick more popular, (or maybe that they had given away too much with Internet Sidekick's Synchronise files ability and realised that it (File synchronisation) could be developed to be a Money spinner to cater for all the people with handhelds!)
I have always liked a good program and Sidekick was, and is, despite the odd problem a very good & complete program if only they, Starfish(management), would realise it and develop it as a suite on XP or whatever and free it from it's DOS origins which has held it back since Windows98SE..
I rant on AND ON Sorry! I just enjoy a program I can get to grips with and Sidekick has been that program.
Whatever you choose is up to you and I wish you well.
Regards Jim