It's not because there wouldn't be good full-on with great melodies. It's because there's such an amount of stuff released these days it's really hard to find the good tracks! If 1 out of 20 tracks is good it's really time consuming job to find out the goodies. Especially if you don't download.
Also tell me, have any of the above mentioned artists released a whole album where every track is class? Perhaps not? Many old schoolers have! So in conclusion, for one major track I strongly hesitate to buy an album...