I ordered the APP3 when they announced Live Translation (I'm Sr Director of distribution centers with a lot of Spanish speakers and that will come in handy), but then tried to cancel my order when they said Live Translation would work with APP2. Alas, my order couldn't be canceled, so I figured I would just return it after it arrived.
It arrived today, and was watching reviews on YouTube and reading some on here comparing APP3 to APP2. I was pretty much convinced to return the 3's, but figured I would open them to compare for myself. I'm so glad I did as the difference is night and day (for me)! Mainly around the clarity of the music.
I was listening to a song with clean electric guitar picking, and the clarity of the picking stood out to me. I compared to my APP2, and it sounds muffled. I don't think my APP2's are packed with ear wax, as I don't see anything but I guess anything is possible. Listening to louder music also demonstrated better clarity, as well as deeper bass.
The medium tips that are installed when you open it felt tight, so I switched to the small tips, which is what I have on my APP2. It felt more comfortable, but the seal wasn't there. Could hear the TV on in the background, at a moderate volume. I switched to the medium tips. It felt fuller and tighter in my ears, but definitely a better seal. Couldn't hear the TV at all. I wore them for about 15 min and didn't have any ear pain. I'll have to try a longer session tonight to see if medium tips are going to work for me.
I'm definitely keeping them. Did an A/B back and forth with my APP2, and every song was noticeably better on the APP3. YMMV.