Here's the scenario --
You finally assembled your kick ass 2-channel system and it sounds great. But over time, it begins to sound mediocre for two reasons --
1. You have become accustomed to the sound. The glorious detail and phenomenal soundstage no longer blow you away.
2. You heard your friend's system or visited an audio store and their **** sounds better than yours.
So now it's time to upgrade. Of course, you post here to get recommendations, talk to your audiophile friends, and scour audiogon for a good deal. Before you know it, you spent more than you can afford on the biggest, baddest components. You wait impatiently for FedEx to arrive, hook it up, and it sounds great for a while. In fact, you convince yourself that it sounds better than the setup you had before. Eventually (and perhaps subconsciously), you feel something is missing, so you change out interconnects, speaker cables, tubes, etc. to get it back to the same kind of sound you loved with your previous system! To make matters worse, the saga continues.
So how does one go about slaying this upgrade beast? Should I surrender my checkbook to the wife? Say it ain't so!!