I use the 8525, the model before the Tilt, and use the Bluetooth pretty much exclusively. I use the Artone neckloop, and it works great. Artone Bluetooth Loopset, T-coil Inductive Neck Loop: TecEar.com Not too cheap, but it works great.
My biggest problem is the interference created from electrical devices. The Tcoils are very sensitive and my aids go crazy in my house or car or at work. Evidently they pick up on the electrical bleeding from machinery or various electronics. I can trace the wiring in my house with my aids while using the Tcoil.
