Genealogly software

Have I guessed the correct forum for posting this message? I'm not very good at discerning into which forum to post certain inquiries or comments - so I just hope for the best.
Anyway - What genealogy software do you use? How would you evaluate it (i.e., what do you like/dislike about it)?
My only experience with genealogy software has to do with my husband's genealogy/family history. That was years ago, on a Mac - I used "Reunion". But we changed to a PC about 4-5 years ago, and I never got software for the PC (consequently my research slowed to a crawl - with occasional research, but notes all in longhand, and in assorted notebooks).
NOW, we have a brand new computer - an iMac (very fancy). I will have to investigate the new generation of genealogy software. If you have any tips to share (general use of software; or specific tips) I would be most appreciative.
Thanks all,
Natalie