Prior to purchasing this, I spend months looking at IEM's below £50. My shortlist included Soundmagic PL50, Nocs NS400, etc. Only reason I needed this is one of my tips for the Samsung Galaxy S2 IEM went missing. I choose this over slightly cheaper Sony's with button controls as the driver and sound quality is quite good. At £32 you really can't go wrong with these.
The packaging is superb. You get a lot of tips of various size, 7 to be precise. 4 are normal and 3 foam tips. You also get a cord wrapper and nylon pouch. To see more about the packaging do a search on youtube about the unboxing video. The onl problem I see with the packaging is that you need to slightly force the wire clip into the nylon patch and there is space though tight. On the normal silicone tip you will get good sound isolation. I have not tried the foam tip yet as I want some sort of sound coming into the IEM's so that I'm aware of the surroundings. The wire is L-shaped (right side longer) so you could hang it over your neck. This is quite useful thought from Sony. Also, you could buy tips from Comply and since this is a Sony product some models share the same tip size.
Sound is where it gets interesting. This IEM's need to be burned in before you get good sound. Also, it may take few hours for the tips to get comfortable in your ear. A minimum of 15 hours should be allocated to burn in. You can listen to tunes directly though it may sound a little harsh muddle middle bits. After the burn in session, the sound quality is nice. Quite warm. You will hear the bass represented quite more here. This is not some beats monster headphone and those wanting pure bass should find those products instead. Compared to the Creative Gigaworks T20 SII and the Philips HP890, the sound is warm, good mids and slightly off at the top. The sound is not analytic and you don't need an AMP with this as it produces quite a loud sound without increasing the volume. Also, if you use an amp, the sound may turn even warmer. Minor software Eq tweaks could be useful to correct the high ends.
The only downside to the IEM's is that they do not have wire controls but for £32 I can't complain. Most high end IEM's don't have controls so that is not really a problem.