While the Pistons 3 came out, I ended up stumbling on this thread by chance. After going through 5-7 pages, I decided to buy a pair and convinced another friend of mine to buy one as well. I have been using the Havi B3 Pro 1 since I stumbled on that thread last year and it was my main go-to IEM. I bought mine through the aliexpress link -> http://www.aliexpress.com/item/2015-Newest-LZ-A2-Dynamic-and-Armature-3-unit-Headphones-HIFI-Fever-Earphone-As-K3003-DIY/32501370155.html . We purchased the one with the mic attachment. It works with iPhone for stopping/playing music, haven't tested mic quality.
Got them yesterday (12/5/15), came in a nice square pouch labeled HZSOUND and a separate pocket bag. When I put them in, I instantly put the Havis down. No burn in, I was literally impressed by them and the music felt more alive. Music source is an iPhone 5S through Google Play Music since I didn't put anything through iTunes.
They had the dynamic bass I was looking for while retaining a nice balance with the vocals and highs running through the BAs. Literally the best purchase I have made for an IEM this year and so far. It didn't sound as bright as some people said, so it works out for me. Not much to say other than that I feel like these are worth more, but luckily they aren't.
On a whim though I decided to try my friend's LZ-A2s. No difference in packaging whatsoever. His however sounds different and more in line with the people saying it is bright. It felt closer in, the bass amount and detail was a bit lower, and vocals kinda felt like they were getting muddy. This pair also created noise once I plugged it in for some reason, but the one I tried first didn't have any. I tested it off with the same song, device, volume, and ear tips just to make sure I wasn't going crazy on the difference, but for some reason there is a difference. It lacked that "alive" feeling I had with the first one and felt more like a $50-100 IEM instead of being worth way more. Currently I am running a burn in just to see if it gets any better, but I contacted my seller through aliexpress to see what they will do. I really don't want to give my friend the "bad copy" since it is his first Chinese IEM, but going on a trip soon and this will screw up the replacement timing.