In comparison my cheap Sony WI XB400 have been going strong for an year now. With much rougher use. I just got the seinnheisers to get rid of the neck band. But 2months and the left is buggered.

They sound good. Battery isn't too bad. But my left ear bud stopped working in 2 months time. I wouldn't buy these.

Yeah... these certainly are not a step up from the Buds 2.

These have Sennheisers typical comsumer IEM tuning with boosted bass, huge scoop in the low treble then peaks at 7k - 10k.

The Buds 2 on the other hand almost perfectly match the harman target up until 2kish, where they tastefully trim a few dB off to prevent any shout right up until their (fairly minor) 8k peak. At which point they begin to roll off smoothly.

Sennheisers IEM house sound is a very acquired taste - generally considered more suitable for electronic music. I'm not saying the CX True is bad (I only have the MTW1 + MTW2's), but to call them superior to something like the Buds 2 is just misleading.