are all amps equal

Well, there is Mcintosh and then there is everything else (this comment is both true and designed to for effect). What constitutes a better value is purely a matter of opinion. Mcintosh amps are expensive - you probably don't get a doubling in performance for a doubling in price. I auditioned every amplifier in the 100 watt plus range I could find within a driving distance of 100 miles. I ended up with a Mcintosh - so I thought it was a 'better value' than anything else. Some say that Mcintosh amps have their own sound (an amplifier really should not) - I don't disagree, again I chose a Mcintosh.

In my system are the Ushers, an Audio Research LS1 preamp (it is a hybird) or a Ming Da tube preamp modified by Response Audio (I swap the pre amps about once a month).The cd player is an Onkyo DX-7555. My present amp is ARC 150 watt ss.
While I am getting some help here, please take aim on the weakest link... Thanks..Don

All amps do sound alike

but only when they are powered off.

Mac also power off better than other amps

McIntosh NOS MC352 in your price range from Audio Classics.
Give "Ernie" a call or email. Best bargain for a Mc amp that will last longer than any of us and sound better too.