dont ask this question.
its personal preference. if you have buddies that record, give their DAW a shot.
otherwise, take a chance with something.
for instance, i use Pro Tools 7, because it came with my Digi002.
i found a version of Cubase SL cheap so i bought it. turns out i cant get it to work right, but i dont like it anyway.
looks like im stuck with PT, which is fine, i'm very comfortable with it now.
i've used Sonar, which i liked, more user friendly than PT is/was. but Sonar doesnt do mac.
so, in short, take a gamble here. depending on your hardware, your options are Cubase, Sonar, PT (if you have an maudio interface), i think those are the three most common. theres also Digital Performer (mega bucks..) Nuendo (also pretty expensive) and some others.
its hard to buy a main recording program because there typically not cheap and you dont know what you are getting into.