Sorry for my differing opinion, but i don't think the sabres are as good value as the deltas. Don't get me wrong, upon first listening to them i couldn't stop my self from dancing (like i did with the deltas), but i got a lot of sibilance out of them. I couldn't listen to a few female artists and i hadn't gotten the sibilance out of them on other IEM's.
I got treble spikes out of it, as i am sensitive to high frequencies,
With this in mind, I was able to mitigate that by putting on foam ear tips. They pair very well with the foams.
Personally I got fatigued by the upper mids and treble especially on the filters with the least amount of bass.
I haven't heard this response from anyone, but this was my experience.
I would have much preferred dampened filters with these.
I'm kind of praying the master 4's are a little more balanced like the deltas. These were either very v-shaped or dominated by upper frequencies.
I would pay 99 GBP for the deltas. At the discounted price i got them at i definitely have the response you all do, but i wouldn't pay 125.00 GBP for them.
I really think the deltas are still the best value if they fit in your ear comfortably.
I'm sorry that it's not praise, but it's what i truly think.