The Starmate 5 is WAY better and less $ than the Starmate 8 in my opinion. However I'm pretty sure the Starmate 8 may use the XM Xpress Docks. If that's the case it's a good transition radio. So if someone gets that and say the radio dies in a few years it should be easy to replace with say an Edge or something and not have to change docking stations. But that's assuming the Starmate 8 uses Onyx/Xpress docks, which I hope it does.its strange to me these different new radios have different names but the same style essentially. Onyx, starmate 8, edge, XMH. yet the price on the starmate 8, and the edge is not too different. Why buy a starmate 8 for 120 something when you could get a edge for the same price. I guess if you are a Sirius customer (like me) and just want another new radio and dont want to sign up a seperate XM account for a new edge...but that screws Sirius subs, really.