I purchased the Supertooth Disco bluetooth speaker several months ago via Amazon. I’ve used the speaker for a while now, with both my iPhone and my iPad and it works well. I paid around $135.00 for mine, but I see that this model can purchased for as low as $100.00 now on Amazon. There are quite a few small, portable bluetooth speakers on the market now, but I think the ST Disco is one of the best available for under $150.00. It is not the smallest bluetooth speaker out there, but it only weighs about 3 1/2 lbs and it is small enough to easily travel with. It is great for a bedroom, study or a hotel room. It is not a substitute for full blown high fidelity speakers, but with 28 watts I think it delivers good sound. The battery is supposed to be able to last 10 hours, although you can operate it plugged in as well, using the included AC adapter. The ST Disco also comes with a carrying case to help protect it on the road or outdoors.
On a scale of 1 to 5 (5 being best), I would give the ST Disco a 4.