Senheisser Bluetooth Dongle Confusion for PXC 310 BT
So I've bought a pair of Senheisser PXC 310 BT which are absolutely fantastic but now I want the Bluetooth Dongle. I'm a bit confused as to what i acutally need though. Senheisser seem to sell one for the ipod classic and one for everything else (BTD 300 and BTD 300i). Thing is tho I'm wondering whether anyone out there uses the BTD 300 with the ipod classic and if so is there any loss of functionality using this one over using the ipod specific BTD300i?
I'm asking this as I want to save myself £40 and i can think of a variety of other devices to use my with my PXC 310s (telly, xbox) so i'm wondering whether the ipod specific one is needed for the ipod or can i just use the non ipod specific one? I rather buy one dongle for everything