So I got out today for my first full hunt using my new Bluetooth setup on the Ace 400. I hunted for about 4.5 hours, and I absolutely love it! I never had a single moment of latency during the hunt - the tones for detecting and pinpointing targets were just as dead-on accurate as when wearing corded headphones.
I did end up switching from the Soundbud Curve units that I intentionally bought for this setup, though. Like I said in my earlier post, the sound quality just wasn't very good for the detector tones - tinny and harsh, the sounds just grated on my nerves over time. I kept using them for almost 2 hours hoping to get used to them because of their 12 hour run time, but I finally decided to end the torture. I finished the hunt with the Soundbud NB10 units, and they were a joy.