^ Actually, the first device I got the HS3000 for, was the Creative X-Fi3. IIRC, it was the first mp3 player on the market to support aptX, and it has a status indicator to let you know when it is used:
The noticeably improved sound quality (and reliability) over my older BT headsets made me opt for an aptX enabled smartphone in the end, and sure enough the SGS3's sound quality (and reliability) with the HS3000 ended up being on the same level as the X-Fi3's. Granted, that's no definitive proof that aptX is actually used on the SGS3, but I'd consider it a strong indication.
Edited by james444 - 11/24/12 at 9:00am