[AlmaataKZ]

Hello, Head-fi-ers!
 
I have been reading this site for several months (thank you!) and finally decided to register. I see there is a lot of experienced people here and I hope I can get some help.
 
I have gone through a major upgrade of my hifi kit in the last year (check this if interested http://community.whathifi.com/forums/t/392544.aspx) and I am now in the final stage - upgrading the ear phones.
 
I am after a pair of high-quality in-ear monitors for long-term use. I will be using them mainly during the daily work commute and during travel (plane, train), so the requiremetns are:
 
- good sound isolation
- comfortable fit (i.e. either a custom moulded model or a retro-fit custom tip)
- very durable
- detachable and replaceable cord
 
As I plan to listen to lossless tracks (ipod/iphone - who knows, maybe apple moves to support 24 bit etc on their portables one day  ) the requiremetns for sound quality are as follows:
- highest sound quality
- I am not sure if this is "needed", but possibly/likely multiple drivers. Three?
 
As most likely it will be connected to ipod/iphone I also need:
- certified ipod controls (3-button) - doesn/to have to be integrated, can be optional acessory (like Sure optional cable) 
 
The budget is 'as low as possilbe'. I do not want to spend unnecesserily. But I am prepared to pay for quality and the features I need. The range is 100-1500 GBP.
 
As I started to look into it I quickly realised that the main problem is lack of possibility to try. And this, togehter with potentially high budget invovled, makes researching things even more critical.
 
At the moment I am trying to understand which makes and models can fit the requirements. I would appreciate your help in putting together a short list.
 
So far I see the following:
 
 

Make	Model	Price	Custom fit	Drivers	Cable detach?	Connector	Full ipod control/mic
Shure	se535	gbp360	Optional gbp90	3	yes	microcoax	Optional cable gbp45
Ultimate Ears	Reference	usd1000	yes	3	Yes?	?	?
Ultimate Ears	11Pro	usd1150	yes	4	Yes?	?	?
Ultimate Ears	18Pro	usd1350	yes	6	Yes?	?	?
Ultimate Ears	7pro	usd850	yes	3	Yes?	?	?
Ultimate Ears	Triple Fi 10	gbp200	Optional gbp90	3	NO	?	?
Westone	ES5	gbp1000	yes	5	?	?	?
Westone	ES3	gbp900	yes	3	?	?	?
Westone	ES3x	gbp900	yes	3	?	?	?
ACS	T1	gbp600	yes	3	NO	?	?

 
I need to understand which of these have detachable cords and what connectors they use so I can see which can be fitted with ipod controls if they do not have them natively.
 
I then need to find ways to audition.
 
Any advice here?
 
(I am in London).