Pros: Cheap and colourful
Cons: They sound cheap too
These are pretty much drop in replacements for iPod earphones, and they sound almost identical. The bonus is that they're rubbery and less likely to fall out, the bad part is that they sound like before IEMs hit the mainstream and everybody had to have Megabass switched on to get any resemblance of a beat.
In short, you'll need these turned up so loud to hear all parts of the music that you'll probably have tinnitus before the end of the album.