I bought my 13.4s a very long time ago, and have been delighted with them. They do suffer from the "impedance mismatch" problem, but a simple mod will fix that.
Mine were recently upgraded to ANR - which made them even more excellent. I would never go back to non-ANR now.
But if you're not sure this flying thing is for the long term, then go for a cheap pair until you've decided what you like and don't like.