Just briefly but I’ve compared E2000 to E3000 at Yodobashi Camera today.
First time for me to directly listen to the both at once. (Have heard E2000 at final showroom and bought E3000 online)
E2000: Focused on vocals and mid-bass. Bit brighter than E3000 and slimmer sound. Younger sound maybe targeted for mass (non-audiophile) users.
E3000: Vocals goes bit distant compared to E2000, which means it might sound more spacious. Maybe more sub-bass and dense overall sound. Much modest warmer vocal but has somewhat more resolution in treble. Sound signature more like expensive audio system or TOTL headphones. Well balanced but still having final house sound transparent mids. I think it is a nice entry for audiophile sound signature taste in really affordable price (5,480 yen and 548 point (yen equivalent coupon given after purchase) in many shops, which means virtually under 5,000 yen.)
Before comparing them, I thought I might buy E2000, but after comparison audition I didn’t. Just wasn’t my taste.
From my memory difference between E3000 and E2000 is bigger than that of Sonorous III and Sonorous II (I auditioned them for ten days at my house).
Short comparison done using following tunes in ALAC by HF Player on iPhone 6 Plus + Mojo.
Masahiro Arita: Bach flute sonata in C BWV1033 1st mov. (His 3rd recording played by modern flute "Helmuth Hammig" in grey jacket album)
BABYMETAL: Akatsuki (heavy metal with female vocal starting with electric guitar solo)
I definitely preferred E3000 over E2000 for both tunes.
Really well balanced sound.
As I wrote before, sound signature of E3000 is like a mini-mini ETHER Flow. (yes, quality is apparently different but overall feeling reminds me of ETHER Flow compared on Mjolnir 2)
You can see many reviews retweeted by final staff’s twitter though they are in Japanese.
https://twitter.com/final_staff
I completely agree with your comparison between the two, and also preferred the E3000.