The Triple.fis are a very different, but equally high-end, IEM. They have a bit of a mid-bass hump, but seem to go much deeper than the 530s, and have a very unique clear high-end the Shures don't possess. Think of a V-shaped sound, but still very good, where the Shure is good in the bass, excellent in the mid-range, but a bit rolled off (especially compared to the TFPs). However, neither IEM can be worn down comfortably, both seem to require over-the-ear.
I really like the Monster Turbine Pro (Gold or Copper) as a very very good universal IEM using a dynamic driver. While I haven't heard the Sennheiser IE7, I have the IE8, which is also very good, but has a mid-bass hump/warmth that can overpower some music. The IE8 treble is good, but the Monster Turbine Pros seem to extend a bit more and with more clarity. However, I also enjoy the coherency that the IE8 brings to my music compared to my 530s.
If the Turbine Pros are out of your price range, I still enjoy the original Turbines. The cable does not seem as sturdy as the Pros, but I have had no issues after 18 months of use. The sound is a bit warmer than the Pros, but the dynamics and clarity are shared with their younger, bigger brothers.
There are many good options today. Let me know if you have any other questions.
Edited by Dobber65 - 6/2/10 at 11:06am