Digital upgrade, Why Can't I make a decision?

Everytime I decide to audition a new player I never buy it because it will be obsolete in a month. Also, every player I bring home sounds so similar to wht I already have that I wonder about the significant advances in digital. The only player I have heard that really is a revelation in digital is the PS Audio Perfect Wave. I believe this is a older technology implemented by PS Audio and it does sound fantastic. It blows away any CD player I have ever heard hands down. Now i am thinking, this technology will get better and cheaper if I just wait a few more months. Here I go again. The one constant that seems to be a decent investment is analog. I know I should upgrade my CD player but I am caught up in this choosing thing? Has anyone else waited long periods for this reason? If so, what componenet finally got ya over the hump?