If you looking for Bluetooth speakers in range of 4-5k then go with jbl flip 2. Currently I am using this since last 5 months without any single problem. Nice sound quality with good battery backup. Bass is also good and easily connected with any Bluetooth devices. Good build quality and light in weight.It gives 5 hrs battery backup after full charge.
JBL is well known for its nice sound quality. I recommend you to try this, it is worth of money.I bought it from Flipkart at price of rs.4200.