A 5.1 system is totally different than a 2.0 system. You be have the benefit of surround sound and the deep impact of some movies due to the subwoofer. 2.1 systems are also great for music. No one can tell you what you will like. Go to some retail stores and demo a surround system.
Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus Five 200 amp, Chase SS 18.2(2), VS 18.1(2), Samsung BDP F 7500, Asus/My Book Live HPC 4 TB
Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500