Sennheiser CX300 Vs CX400 Vs CX500

[Digitalize]

I Lost the tips to my last in ear headphones (Cheap Logitechs, good for the money) and now i obviously need to replace them.

I Have a pair of Sennheiser HD-205's which i use in the car, at home etc, but when out and about, i really need in-ears, and i have heard nothing but good things about the CX Range.

Firstly, whats the best price for each of them? Found them all for around £15 on Amazon, but i doubt them Amazon Marketplace.

Secondly, whats the real difference between each one? I Listen to Electronic, Techno, Drum 'n' Bass, Rock, Indie, some Pop, Lots of 80's, and some Metal, so im quite big on the bass, but obviously need the whole range to be very good.

Thirdly, what are the caps like? I Lost my current ones by having the wire snag something, or me pulling them out too quickly, and the cap flying off, and being lost in a street, so these need to be secure.

Finally, which would you go for? I Have a budget of around £30, and bearing in mind i will be wearing them for an hour a day atleast on most days.

If it makes any difference, they will be used primarily with an iPhone 3G, MP3 and AAC Lossless, i try to keep the Bitrate high, but uhh, sometimes... iTunes doesnt deliver, yeah....

[Digitalize]

To Answer my own Question, a friend has the CX300's, they sound very good for the money, so will be getting them.