Go to there websites, find out which program serves your needs the best.
Read the instruction manuals, the best information is usually in the manuals.
For the record, I use cubase. Its alright, I haven't really tried a whole lot of other software but cubase was easy to figure out and use. I don't know if its my PC or what but anything i record with cubase sounds like shit. Probably my MIDIMAN soundcard, thing sucks, Or my 667mhz celeron walmart ****ing HP, but hey, i needed a sequencer and a word processor, whatya gonna do right? I not big into recording anyways, i just like to synthesize profound new waveforms.