Atm I already own the VSonicGR06 and it sounds great, but I just got some cash for New Years, so I was wondering if I should buy the GR07. Is the sound difference between the GR06 and GR07 worth $170? Also, if not, are there any other IEMs better than the GR07 for under 200 dollars that is worth the upgrade? Any advice would be very helpful in making the decision. Thank you!