Best Downgrades you've done

Like many in this hobby, I've learned (the hard way) that more $ doesn't necessarily translate into better sound. On a couple of key areas, I have traded in the "hot" product for a "sleeper" replacement and was very happy witht the result. Here are two examples:

1. Exchanged a PS Audio P300 for a Balanced Power Technology BPjr. The latter provided a smoother, darker background, and just let my gear do its thing. And it's less than half the size. Net savings: $350.00.

2. Exchanged Acoustic Zen Reference Matrix MK-2s for an older pair of Nordost Red Dawns. Connected b/n the CDP and the pre, this combination provided a much more balanced sound with a lot less "in-your-face" presentation. Net savings: $100.00.

All of this gear was used, purchased here on Audiogon.

Of course, I realize that "individual results may vary," but I'm curious to know if anyone else has had success with actually spending less money for particular components. Thanks!