The Studio 7 sounds a lot richer in the bass, but the Exteme 3 is pretty good for a smaller speaker, and probably the better overall speaker, with more trebble and probably has enough bass for a normal room
All JBL in general sound good and have an excellent value for money. I like the Boombox so much, but in my opinion a bit expensive compared to the others, but it's great
Jbl is not a small speaker HK is the small one JBL EXTREME 3-100W JBL CHARGE 5 -50W HK -50W HK should be competing with charge 5. But here 50W HK competing against a 100W speaker
Onyx studio 7 is just better. It goes enough loud for normal listening unlike JBL crap with trash tuning. JBL screams that's why people with 0 music knowledge like it.