Harman Kardon - Go+Play Mini

I think they don't sound all that great. Check out KEF if you're shopping in that price range.

Nice. I enjoy a bit of bass in my speakers. I walked into a B&O store for some demonstrations and found they were lacking in the lower frequencies. I'm not shopping in that price range yet, so I've just got a Harman+Kardon Go Play and a Logitech Z5500 (connected to Creative soundcard). I dropped by a store selling the KEF speakers, though, and they are definitely worth their money. I'll save up a bit.

Not comparable. Flex is among the best for the size but it's a small speaker. Harman is offering good detail is sure better than the flex and if I m not wrong x6 the weight. Don't know about xg300.

Yeah, both the HK Go+Play and Onyx Studio series would blow away the Max. They are my go-to speakers when I want the music to really shine through. Incredibly deep bass and crystal clear mids and highs. None of my other 5 portable Bluetooth speakers come close. Edit - Just saw someone post the HK Go+Play 3 is selling on ebay for $132 right now. At that price, it's a no brainer.

Keep in mind bigger isn't necessarily always louder or better. Before you buy some big ass rolling suitcase speaker, take a look at something like the Harman Kardon Onyx Studio 5 or HK Go+Play speakers. I own both and have used them outdoors at the beach, pool, camping, several parties, and even a few times to DJ small get-togethers. They get super loud quality sound and have the most insane bass coming out of them when you sit it next to a wall that can help project the sound outwards. Battery life is also pretty killer on them. They are heavy and feel like quality. I sold my JBL Extreme and Bumpboxx because the quality of sound they would output at high volumes were trash. Yes, they got loud, but it was hollow sounding distorted music. The HK series sound so good and full in comparison.

The Harmon Kardon Studio and Go play speakers have a fat low end and go on sale for much less than the Brane. Good "indoor" speaker but not as tough as JBL/Soundcore/Bose designs.