I also have the Mcintosh MC-402 and I have a MX-119 for a preamp/processor. I am using the Vienna Acoustics Mahlers for the fronts, Waltzs for the rear surround and a Maestro for the center. I am using three bridged channels of a Mcintosh MC-7106 for the center and surrounds at 320 wpc.
I do most of my listening as two channel and with the MC-402. I love my Vienna Acoustic Mahlers. They retail for $10k, but I was able to buy a mint pair at $3900. There are deals out there especially on this website.
A long time ago I did own a pair of JBL 4343 speakers, I loved them, and they were very special to me. I foolishly sold them when I went back to school, but they were nice. They were a very different speaker than the VA Mahlers though!
My wife will tolerate the Mahlers, but just barely! (They also sound a lot better in many ways!)
The JBL speakers are great and if I was able to rock out and was single I might be look for a pair, but I am at a different stage in life and am seeking something with a little more refinement that can still kick ass (bust discreetly of course!)