VST Plugin That I Recommend refx NEXUS

Nexus is intruments and loops VST plugin. It content sixteen instrumments (sound) and over 100 presents. 

Its really easy to use, just open it and you will get yourself into it. You will see instruments bar and piano keyboard. Choose the sound you like and just hit a record button and start playing. 

Checkout some pics of NEXUS VST PLUGIN, there is also a link for more info.