Agreed. Again, it makes communities like this one all the more valuable because this is the only way to wade through the junk. There is a ton of music out there and only a fraction is worth listening to. Of course, that fraction still represents a large number of CDs (100's, perhaps 1000's per year if you don't limit it to just "jazz") so how do you find out what you might like? Internet radio, internet forums like these, blogs, etc.
The big magazines only cover the big guys. The small magazines that cater to niche markets like jazz and blues and folk tend to be corrupt ("Buy an ad, get a good review!") or don't make any attempt to differentiate between the good and bad, so you can't rely on them. In some ways, it is the ultimate democratization of purchasing... you have to be a well-informed, well-read consumer and you will be well-rewarded with satisfying music.
In other words, just listen to Sangry.