While buying and searching for vintage Infinities I've always been intrigued by Genesis. Seemed like a logical progression as that's where Arnie went to for awhile. My ownership of Infinities have included: 4.5, 2.5, RS1(b's now), 9.1, 6.1 Kappa 5, Kappa 7.1, RS11b and a few other lower level Infinities. It always depended upon what type of room I was wanting sound in of whether I kept them or not.
I used a Paradigm center channel that actually went with the 2.5 and 9.1 fairly well. But, when I went up the Paradigm chain for their bigger speakers they were too forward. Maggies have come close but not quite everything I want. Was looking at some Dunlavy's but ended up getting a good deal on some heavily customized VMPS FF-1's. That woke me up to woofers on top and bottom. Just couldn't do the mids as well as Infinitys though. Saxaphones on Infinities are the ****. Others I have listened to or had - JBL, Polk (do like their midrange), PSB, Paradigm, Acoustat and Carver. Oh yeah, forgot about the Carvers. The Amazings are pretty damn good sounding, need good power though and the shape doesn't settle well with most people, But I highly recommend at least a listen to those.
Had a chance to get a pair of Genesis APM-1's. Auditioned them with Genesis 500's and the $60,000 McIntosh towers. But, when Joe Bonamassa hit his acoustic guitar after a heavy drum beat opening the APM's were everything I liked in the Infinity 4.5's and then some. Bass not as sharp but different. Anyway, I looked for a long time before I finally found some in my price range. So, I am now looking for a way to start climbing up the Genesis chain.
This has taken years so enjoy the journey - I did.