I'm not allowed to comment on V-Moda phones, because if I say anything positive it could be construed as marketing/promotion.
If I had anything negative to say about them, I would say it.
I would say, however, that the vast majority of people find that the Apple IEMs slip out - I certainly do. Having problems with them in no way indicates that you will have problems with other soft sleeve IEMs in the same class as the CX300/EX71/Bass Freq/EX90/Vibe/ATH CK7, etc.
I would especially draw your attention to the fact that some phones that come in different colours use different cable types with different colours, and that some cables (often those with a thicker clear sleeve) may be better than others for microphonics and tangling.