Hmm.. I thought the M & T ratings were there all along..
I have a Bold, and a Cochlear Implant, and the sound quality is extremely good on 3G mode with Rogers and very clear. Tip: Change audio to 'more bass' in the options, it'll sound much better no matter what kind of hearing you have. I prefer plugging in directly via headphone jack. The phone can still hear you talk from the mic on the bottom of the phone. Even holding it up to your headpiece is still very clear for me. I have a CI headpiece that runs at 49 mhz, and usually it picks up strong interference from neon lights, and electronics held near to it, but I don't hear interference with the Bold.
I understand that the headset cable that came with the bold is telecoil compatible.. why don't you try that one? Flip your HA's to 'T' and hang the buds over your ear or something. Might be good enough to tide you over until you find a better solution.