SonalSystem is so good. They have been producing some of the highest-quality sample/loop collections available on our shop, and in Dec. 2018 only they are all 30% off!
Recent additions include Sonal SynthPop, which is a unique library of complete multi-track songs that you can pick apart, re-mix, re-assemble, or directly lift from, royaty-free, for your own productions! Classic drum loops like Biscuits and Gravy and Heavy Hitter round out the offering, along with several flavors of indie and hard rock guitar in Echo Park and Power Tools.
Many SonalSystem Add-ons are available in three editions: Gold, Silver, and Platinum, so you only need to pay for the right tool for your job. They are compatible with Studio One Prime, Artist, and Professional (Versions 3.5.4 and higher).