Ok, thanks for getting back to us.
Sennheiser make a selection of closed back phones, some are circumaural and some are supraaural. Most closed back phones give a reduced sound field with the musicians seeming tight in at your head, sadly this is what closed phones do.
HD280 pro 60 ohm, circumaural we have two pairs and they are both used for traveling on planes and buses. They can be driven by a Zune and and Zen Vision M to acceptable listening levels. They do fold in and they are quite robust, made in Ireland and have the 2 year warranty. Shop around online and you should get close to $100. They are big. One of our pairs had had daily usage for 4 years and still good. I have found them for $90 online which is about 1/2 original retail price. Son #2 uses them for drum pratice and monitoring applications at college as well as travel (studying to be a sound engineer)
HD25 SP II, these are the cheaper versions of the HD25, they are build for sound technicians and will last well. Supra aural but good sized cups and a single piece plastic headband. Cost about $120 if you shop around. They are like the grown up brother of the HD202 listed bellow. They should last years. I am not sure how easy they are to drive with an ipohone. They look good
Simlar sound to HD280 pro in a cheaper headshell and a bit eaiser to drive, sound quite good circumaural, HD201. Comfy to wear and good sound for pound. made in PRC 1 yr warranty, not as robust build quality but lighter on the head and not as much clamping force on the head sides. Dont block out noise as well at the HD280 pro but a sweet deal for under $40 , might eben get them under $30 if you look hard enough. Edit now at $18 on amazon !!!
HD202, a different design using a one piece plastic molded headband and supraaural cups. 1 yr warranty. Quite robust and can be had for $40 ish. No good for big heads and big ears. They do cause some fatigue through clamping the ears down...for me...but look a t my avatar, I chose this cartoon for a reason..
PX200, smaller still, folding and slight clamping force, let even more sound in as they are smaller cups but they are comfy and very neat. under $50. Small and neat.
Have a read of the reviews on the net and ask on here.
I can offer personal expeince only of these cans listed.