Bose OE2i vs AE2i, which on-ear headphones to buy ?

If you are a music enthusiast, a great headphones can change your bad days to lovely days,  Bose OE2i is one of a great headphone that comes with a portable feature due to its size and foldable phones, works well with IPhone and IPod Touch, very comfortable to wear for a long time listening, while AE2i also comes with a foldable option, as well as light weight and IPhone and IPod Touch and IPad compatible,

Click here for the full detail specification of Bose OE2i and AE2i, starts from 139 USD (limited time) @ Amazon 

So, what is the difference between these two headphones that are in the same price range. I think Bose OE2i  is a upgrade version of AE2i, it has been adjust to fit a travel purpose, Bose OE2i has a lighter weight than AE2i as well as size, but in contrast, it means you may have to accept a reduction of audio quality since it has been compromised. So, which one is the best choice ? If you are so serious about an audio quality, I am pretty sure that Bose AE2i is a great choice, but don’t forget that what you have to sacrifice for is more space and a little bit harder for carrying, while Bose OE2i  is perfect for that task with maybe a little bit of sound drop. But both have the same 4.5 star rating from 5 that is so unbelievable, so, I don’t think you may need to worry much about comfortable and audio quality. If you are looking for an option with a little bit cheaper price, you may like to check out Audio-Technica ATH-M50, it is a studio headphones that on 20% off at the moment.  But it may not suites your travel purpose.