Artist doesn't support plugins, but it comes with many good basic drum loops.
The Studio One 2 Pro upgrade is on sale now. It supports all plugins and includes a entry level Melodyne
Studio One 2 is actually a very cool DAW
But so is Reaper, and it supports plugins just fine.
“Please don’t make the mistake of thinking that the arts and sciences are at odds with one another. That is a recent, stupid and damaging idea..." Tim Minchin