My current home theater system consists of Yamaha RX-A1080 powering a 7.1 system. Infinity Interlude series Il10's for front and rear surround. Il 36 center and duel Il25's for surround back. Il100 sub. I was looking at JBL studio 5 series off eBay for an upgrade. My question is it really worth it? I mostly use the system for everyday use watching cable but do love to throw in a 4k Blu Ray on movie night for that at the theater experience.