I have the SBH52 which is very similar to the items mentioned. I have to say that it's a bit of a disappointment. The sound quality is OK - although nothing to write home about but the range is appalling. I think this type of device would only really be suitable for very casual listening.
Volume levels are reasonable but there's a fair amount of clicks and pops (at least there is on my Galaxy Note 2). As am alternative phone handset callers have reported to me that my voice doesn't come across as very clear although they do sound OK through the earpiece.
It's a great idea that is let down somewhat by its execution. I personally cannot recommend the SBH52 to anyone who's primary concern is going to be sound quality.
I hope this helps