Hi.
I have, here in Spain (important for the lack of JBL vintage product) in my "main" room a 4430 couple and in my back another 4425, which I have many years. Many times I have thought of a change of the entire speaker system by another JBL, but a little better ... my problem is that it can not have more width than the 4430 for space problem.
I have a project parked around 4435 "in tower" since I am very happy with my system and I find here couples of the series 43 is more than impossible and the shipment from other countries and without seeing the product is also complicated.
Really the sound of my 4 pairs of JBL is very good ... and when I disconnect the 4425 from the system it is not the same ... I thought about selling only the 4425 but I am not satisfied, now, with the sound of the 4430 them alone. ..
According to your experience ... what would be, according to measures similar to 4430, the next step for this system but only with a couple of speakers?