Here are my recommendations(having done tons of drum tracks both in the box, and played in via a Roland E-kit):
1-Superior Drummer 3(arguable un-matched. great sounds, expandable, fairly easy song construction and is also a very good drum replacement option).
2-EZdrummer 2. Think of this as Superior Drummer 3 "Lite". Really well-done but not as versatile as SD3.
3-Addictive Drums. Similar to EZdrummer and also very capable.
Watch some demo videos on these(either the manufacturer website or youtube) and see if one of them looks better to you. All can do very good pop/rock/country, etc
