I've had the older generation Bose In-Ear. It had good bass feel for a semi-earbud, and a treble that was never piercing. It did perform well with low volume as well, as the vocals were clear and words can be heard quite easily. However there was a bit of bass bleed to the mids and female vocals weren't so great.

Overall the Bose IE was quite nice actually, there was nothing wrong with the way it sounded. It was the silicon tips and price that were the most annoying.
Also the cable doesn't really fare well towards the humid and hot temperatures in this country. It went yellow and started to soften up and peel off in 5-6 months.

If the newer gen had fixed the bass bleed, fixed the annoying silicon tips (they like to fall off and I had one of them missing), and made the treble a tad bit more revealing(which I read that it is), it would be quite good. But it was already overpriced then, and seeing as the improved version is about RM60 (IINM) more expensive, I think an audition and comparison would be necessary for you to determine for yourself whether they are worth the premium. I found that the cheaper Sony MDR-EX300 was a better performer, but that was a true IEM, not a semi. It did however made me realise how much treble roll off the Bose IE had.

Also, it was by far the MOST COMFORTABLE pair of earphones I have ever had, ever. An ordinary earbud would feel itchy and would easily fall off, the Bose IE had that feeling that it would fall off but never does and the silicon tips were really soft and blends in. The new design tips should fix that falling off feeling. Again, if they have a test unit, try it out.

Hey there is an owner of a Bose IE2 here, who was it? I forgot.