G-POP vs JAM Classic

[Quasar]

Has anybody tried both of these speakers to compare the two? I'm looking for an inexpensive Bluetooth speaker but I also want to get whatever sounds the best at this price range. The JAM plus is closer to the price of the G-POP but it looks like the only advantage is being able to pare two for stereo sound. Is there any that are better around the $40 price? Thanks for any feedback.

Amazon.com : G-Project G-POP Portable Wireless Bluetooth Speaker with Speakerphone : G Project : MP3 Players & Accessories

Amazon.com : HMDX Audio HX-P230BK JAM Classic Bluetooth Wireless Speaker (Black) : MP3 Players & Accessories