@weissja36, thanks for the reply on the V7 drivers, having had all 3 of the Ypsilon and both of the Nhoord, the original Ypsilon and the S2 are my favorites with the new Nhoord 3rd.
R1: technically its very good but can seem a little lite on the bass at times, but it does go lower so depending on the track it can be really good or average at times.
S2: An improvement over the original with a better balanced FR from high to low and the most dynamic to me
Original Ypsilon: while good its as a slight recess in the mids but has the most bass of all
Original Nhoord: most forgiving and easy to listen to but lacks the details and air of the others, bass is good but does not go as low as the others, for those who are sensitive to highs this is the best of the bunch
Nhoord Red V2: best balanced FR, second in dynamics to the S2 and easy to drive since it sounds great even from my phone or headphone jack of computers
RS2e: best upper mids and highs of all, clean, a lot of air and the most extended, can be amp picky, it sounds best out of the headphone jack of my UD-301
SR-225e: modded with dynamat, felt, sorbothane and 2 vent holes. Better than a PS500 in the bass and a fun signature without being harsh in the highs.
Note: only the RS2e is stock, all others have dynamat in the cups, and sorbothane, dynamat and/or the factory damping material on the back of the drivers.