Recommendations on best wireless headphones for Minelab Etrac

[Bullhead23]

My sunray pro golds are ready for retirement after 8 years of great service. I'm now in the market for the best pair of wireless headphones I can get my hands on that are compatible with the etrac. The research I've done hasn't pointed me towards any particular unit. I thought the greyghosts would be a good choice but I read that the quality aren't as good after the company fell under new owners and the tones from the headphones don't match the detector which is concerning to say the least. Anyone have any experience (positive/negative) with the Grey Ghosts or would you recommend another brand that's more compatible with the etrac? I know the etrac is an older model so if they work better with traditional cord phones I'll stick with a new pair of sunrays.