I am not a Macintosh fan. I am into PC's I got a IPad because I need it in the field to access the MLS. It is a great tool because I always get people who see signs and say "hey why didn't you set up a showing of that house". I then look it up on my IPad and say something like well it is 200k above your limit.
It really helps make my job easier and I can even set up showing appointments, boom just like that.
For a Realtor it is an essential tool.