Take Etymotic's award-winning, $330 ER-4P earphones and mix them with an iPhone-ready microphone and control box, and what do you get? The 2008 Best of Show award-winning hf2 ($179). Note the major price difference: the hf2 sells for nearly half the price of the ER-4P, which Etymotic attributes to slightly more relaxed accuracy tolerances in the newer model. It's also even more stylish than the most recent generation ER-4Ps, with all black, clean…
