Spend about $15 bucks more and swing for the Shure 440 pictured on the far left. Places like Amazon usually have the cheapest prices.
It's not perfect, but there really isn't any "perfect" headphones in this price range. It's a really good sounding headphone though and a great introduction to good sound. It's closed so it does a decent job at blocking outside noise as well. If your dad is used to Bose, he will find these to be very detailed in comparison, with nice punchy and snappy bass. They are very clean sounding throughout the midrange.
http://graphs.headphone.com/iconGraph.php?graphID=2811The biggest con is the clamping force that you can experience on the head, it lessens over time.
They are also low impedance and it stays fairly constant, with no major swings in impedance. They are just fine driven by portable devices and plugged straight into your computer. Not having to worry too much about the output impedance of the source the headphones are plugged into.
http://graphs.headphone.com/iconGraph.php?graphID=2818You can read a plethora of reviews on Amazon (both the good and the bad).
http://www.amazon.com/Shure-SRH440-Professional-Studio-Headphones/dp/B002DP1FTU
