I'm in love with these IEM's but I'm trying to get a better seal in my ears. I'm currently using the foam buds, are there anything similar from 3rd market that will provide a longer tip and a better seal/isolation/comfort?
If you're OK with deeper insertion, check out the Comply P series: http://www.complyfoam.com/products/p-series/
I believe the size you'll need is 400 - I just noticed that Comply finally added more Vsonic models including the VSD1 which has the same nozzle as the GR07, and they recommend 400.