We have a JBL flip and would recommend it too.
I wanted a bluetooth speaker for the kitchen when cooking, or for when I am working on bikes or cars, and initially only wanted to spend £30. I spent ages reading reviews and most were people stating how loud they were, or that they kept dropping connections. Not many mentioned sound quality. I listened to a few in HMV and to be honest most sounded pretty bad.
In the end I decided to up the budget to get one with consistently good reviews for reliability and sound quality, so got the JBL Flip for £50 from Currys around new year. It has been faultless and sounds pretty good, although not bassy at all. we also considered this Sony
http://www.amazon.co.uk/Sony-SRSBTM8B-CEK-Portable-Wireless-Bluetooth/dp/B009WNN7XI
which has very good reviews, but we preferred the portability of the JBL. I’ve not heard the Sony though, it might sound better.